WO2005030059A1

WO2005030059A1 - An apparatus for removing and processing bio-tissue in a patient’s body

Info

Publication number: WO2005030059A1
Application number: PCT/CN2004/001040
Authority: WO
Inventors: Xing Zhou; Yanfang Li; Aijun Guo
Original assignee: Xing Zhou
Priority date: 2003-09-16
Filing date: 2004-09-13
Publication date: 2005-04-07
Also published as: CN1237943C; CN1524504A

Abstract

The invention relates to an apparatus for removing and processing bio-tissue in a patient's body, which comprises a protective cap (1) and a removal bag (101) which can receive bio-tissue in it. The removal bag (101) can seal with the protective cap (1) anastomotically, and then provide a sealed can isolated from the ambient bio-tissue. There are holes in the protective cap (1) through which the surgical tools can pass in and out, and the holes connect to the sealed can. Since the invention employs the aforesaid configuration, the bio-tissue (18) recovered by the removal bag (101) can be crashed, irrigated and drown out of the patient's body by the surgical tools in the sealed can, thus, the infection by the detritus of the bio-tissue or by the tissue fluid leaving in the patent's body, and the complication or the generalization of cancer is prevented. It can also prevent the injure created by dragging the removal bag (101) in the patient's body.

Description

TECHNICAL FIELD

The present invention relates to a surgical instrument used for recovering biological tissue, and more particularly to a recovery processing device for recovering resected biological tissue under an endoscope. Background technique

Endoscopic surgery is a minimally invasive operation performed through a small incision. This surgical method reduces or eliminates large incisions, making large open surgical operations similar to cholecystectomy and uterine fibroid resection into simple outpatient surgery. The recovery period of patients has been shortened from several weeks to several days, and thus has become more and more widely used. However, when performing such surgery, if the surgically removed biological tissue is too large to be removed through a small incision, the incision must be enlarged and these biological tissues removed, which greatly reduces the superiority of endoscopic surgery; another method Yes, the surgical resection of large biological tissues in the body is divided into small pieces of tissue suitable for removal through small incisions. However, when this method is used, fragments of tissue or fluid may remain in the body, especially When removing fluid-filled tissues such as the gallbladder, cysts, and inflamed appendixes or malignant tumor tissues, it is easy to cause infection, cause complications, or cause cancerous tissues to spread, endangering other healthy tissues, and even the lives of patients.

In order to solve the technical problem that restricts the development of endoscopic surgery through the small incision to safely remove the resected large biological tissues, various instruments have been developed at home and abroad for recovering resected biological tissues. There are two main types, one is a biological tissue breaker, and the other is a biological tissue recovery bag. In the prior art crusher, a large piece of biological tissue is broken into a small piece of biological tissue that can be taken out of the body through a small incision or sucked out of the body through a straw through a rotating blade. However, such devices are used in an open state. Fragments or interstitial fluid will remain in the body, which may easily lead to infection, cause complications, or cause cancerous tissues to spread, such as the technology disclosed in Chinese patent ZL97233972.8. The prior art recovery bag is a flexible bag-like structure with one end open and the other end closed. The open end of the recovery bag is opened in the body by a surgical opener, the resected biological tissue is incorporated into the bag, and then the opening spring of the opener is removed. Separate the recovery bag from the opener, tighten the sealing lasso at the open end of the recovery bag, close the open end of the recovery bag, and then take the biological tissue out of the body or pull it near the incision and crush it with a surgical instrument to remove the body, such as Chinese patent application ZL0215153 .3, ZL01245792.2, ZL01232360.8, U.S. Patent Nos. 5,465,731, No. 5,480,404, No. 5,647,372, No. 5,971,995. Because the open end of the recovery bag cannot be completely closed through the sealing lasso, causing leakage of tissue fluid and causing infection; or, the resected biological tissue is too large to be removed through the small incision or moved near the small incision, or dragged Damage to normal tissue during dragging. In this case, you need to The biological tissue is crushed inside, and then moved to a small incision for removal. Because the crusher works in the open recovery bag, it may cause the broken small biological tissue or tissue fluid to overflow from the open end of the recovery bag, causing infection and causing complications. Or cause cancer tissue to spread.

In order to overcome the above-mentioned shortcomings of the prior art, the prior art needs to be improved to provide a safer and more reliable biological tissue recovery system after in vivo excision. At present, no known biological tissue recovery system can achieve this. Claim. Summary of the invention

The invention provides a recovery system for recovering resected biological tissues from a patient. The core technology of the system is to use the resected biological tissues in a biological tissue recovery bag or an improved biological tissue recovery bag in the prior art, and then use The open end of the protective cover is sealed with the open end of the recovery bag, forming a closed container isolated from other biological tissues in the body, and then entering the surgical instrument through a through hole through which the surgical instrument can enter and exit, and the enclosed biological tissue is sealed in this The container is crushed, rinsed and sucked out. After the broken biological tissue and tissue fluid are completely sucked out of the body, the protective cover and the recovery bag of the present invention are taken out of the body, respectively.

The in vivo biological tissue recovery and treatment device according to the present invention comprises a protective cover and a recovery bag capable of receiving biological tissue, and the recovery bag and the protective cover are sealed and sealed in the body to form a closed container isolated from the surrounding biological tissue; allowing surgery The through hole of the instrument entering and exiting is connected with the closed container.

The protective cover of the in vivo biological tissue recovery and treatment device includes a flexible wall, an open end, a closing end, and a through hole; the recovery bag includes a flexible wall, an open end, and a closed end, and the open end of the protective cover and the open end of the recovery bag form Anastomosis; through-holes in the protective cap allow surgical instruments to pass into the recovery bag.

The anastomosis seal formed by the open end of the protective cover and the open end of the recycling bag has the following structure:

One structure is that the open end of the protective cover and the open end of the recycling bag contain magnetic material, and the open end of the protective cover and the open end of the recycling bag form a magnetically connected anastomosis seal.

Another structure is that the open end of the protective cover has a shape matching with the open end of the recycling bag, and the open end of the protective cover and the open end of the recycling bag are matched to form a matching seal through shape matching.

The third structure is that the open end of the protective cover can form an anastomosis with the open end of the biological tissue recovery bag with a sealing lasso or an elastic sealing rubber band.

The fourth structure is that the open end of the protective cover can form a tight seal with the open end of the recycling bag through a chemical adhesive.

The fifth structure is that the protective cover or the biological tissue recovery bag can use an airbag structure, and the open end of the protective cover of the inflated airbag structure forms a tight seal with the open end of the biological tissue recovery bag. The sixth structure is that the open end of the biological tissue recovery bag of the inflated airbag structure and the open end of the protective cover form a tight seal.

The seventh structure is that the open end of the protective cover of the inflated airbag structure and the open end of the biological tissue recovery bag of the inflated airbag structure form a tight seal.

In the above biological tissue recovery and treatment device, the flexible wall of the protective cover is composed of an expansion spring and a flexible material, forming a composite structure with the expansion spring as a skeleton and a flexible material as a matrix; the open end of the recovery bag or the flexible wall of the recovery bag It consists of an expansion spring and a flexible material, forming a composite structure with the expansion spring as a skeleton and a flexible material as a matrix.

The expansion spring of the protective cover or the recovery spring of the recovery bag can be made of shape memory alloy wire or wire mesh, or alloy spring steel, or other shapes that can be stored and deformed. When released, they can be returned. Made of any material into or near its original shape.

In the above-mentioned biological tissue recovery and treatment device, the closing end of the protective cover may be fixed to the distal end of the inner sheath of the protective cover, and the inner sheath of the protective cover has at least one through hole penetrating the through hole on the protective cover to protect The cover can be retracted into the outer sheath of the protective cover through the inner sheath of the protective cover; the open end of the recovery bag can be fixed to the inner sheath of the recovery bag, and the recovery bag can be retracted to the recovery bag through the inner sheath of the recovery bag. Outer sheath.

In the above-mentioned in vivo biological tissue recovery and processing device, a recovery line can be installed at the closing end of the protective cover, and the protective cover can be retracted into the outer sheath of the protective cover or taken out of the body through the recovery line; the open end of the recovery bag can be installed The sealing lasso can be pulled back into the outer sheath of the recovery bag or taken out of the body by pulling the sealing lasso.

In the above-mentioned biological tissue recovery and treatment device, the opening spring of the flexible wall of the protective cover can be extracted from a flexible material; the opening spring of the recovery bag can be extracted from an open end of the recovery bag.

The invention uses a protective cover and a recovery bag to match the sealing structure, forming a closed container isolated from the surrounding normal tissue in the body. The resected biological tissue is crushed, washed, and sucked out of the body in the closed container, which is completely avoided. The possibility of the broken small pieces of biological tissues or interstitial fluid remaining in the body causing infection, causing complications, or causing cancer tissues to spread, while avoiding damage to normal organs caused by the dragging of the recovery bag in the body, the structure is simple, safe and effective. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of the protective cover and the recycling bag according to the present invention when they are magnetically connected and sealed.

FIG. 2 is a schematic structural diagram when the protective cover and the recycling bag according to the present invention are matched to form a matching seal. FIG. 3 is a schematic structural diagram of the protective cover and the recycling bag according to the present invention when they are sealed through a lasso.

FIG. 4 is a schematic structural diagram of the protective cover and the recycling bag according to the present invention when they are sealed by rubber ribs.

FIG. 5 is a schematic structural diagram when the protective cover and the recycling bag according to the present invention are formed into an anastomosis seal with a chemical adhesive. FIG. 6 is a schematic structural diagram when the airbag-type protective cover according to the present invention and the prior art recycling bag are anastomosed and sealed by an airbag.

FIG. 7 is a schematic structural diagram when the airbag type protective cover according to the present invention passes through the through hole of the inner sheath of the recovery bag and forms an airbag anastomosis with the recovery bag.

FIG. 8 is a schematic structural diagram when the airbag-type protective cover and the airbag-type recovery bag according to the present invention form a seal. FIG. 9 is a schematic structural diagram when the open end of the protective cover with a small through hole and the open end of the protective bag are anastomosed and sealed by negative pressure according to the present invention.

FIG. 10 is a schematic structural diagram of the protective cover and the recovery bag when the protective cover and the recovery bag according to the present invention enter the body through the same incision and form an anastomosis.

FIG. 11 is a schematic structural diagram of the protective cover according to the present invention when it is completely released in vivo.

FIG. 12 is a schematic structural diagram when the opening spring of the protective cover according to the present invention is a memory alloy wire mesh, and the open end of the flexible wall of the protective cover contains a magnetic material.

FIG. 13 is a schematic structural diagram of the protective cover when the opening spring of the protective cover according to the present invention can be pulled out from the slot of the flexible wall of the protective cover.

FIG. 14 is a schematic structural diagram of the recovery bag according to the present invention after it is fully opened in the body.

Fig. 15 is a B-B sectional view of the entire flexible wall containing magnetic material recovery bag of Fig. 14.

FIG. 16 is a schematic structural diagram of a protective cover installed in an outer sheath according to the present invention.

FIG. 17 is a schematic structural diagram of a recovery bag according to the present invention installed in an outer sheath.

18 to 21 are working principle diagrams of the biological tissue recovery system according to the present invention.

In the above figure, 1 is the protective cover; 2 is the open end of the protective cover; 3 is the closing end of the protective cover; 4 is the flexible wall of the protective cover; 5 is the through hole of the protective cover; 6 is the opening spring of the protective cover; 7 Is a flexible material; 8 is the inner sheath of the protective cover; 8-1 is the distal end of the outer sheath of the protective cover; 8-2 is the proximal end of the inner sheath of the protective cover; 9 is a magnetic material; 10 is the outer sheath of the protective cover 10-1 is the distal end of the outer sheath of the protective cover; 11 is the slot for installing the recovery line on the protective cover; 12 is the C0 ₂ inflatable tube; 13 is the handle; 14 is the positioning button; 14-1 is the positioning button Slider; 14-2 is the fixing screw of the slider on the positioning knob; 15 is the crusher; 16 is the endoscope; 17 is the suction tube; 18 is the biological tissue; 19 is the recovery line at the end of the protective cover; 20 is the protection Chemical adhesive bonding groove at the open end of the cover; 21 is a chemical adhesive injection hole; 22 is a sliding slot for a spring in the flexible wall of the protective cover; 23 is an airbag of an airbag type protective cover; 24 is an airbag Type protective cover airbag inflation tube; 25 is the valve of the airbag inflation tube; 26 is the small through hole on the open end of the protective bag; 27 is the peripheral Closed container isolated around biological tissue. 101 is a recycling bag; 102 is an open end of the recycling bag; 103 is a closed end of the recycling bag; 104 is a flexible wall of the recycling bag; 105 is an opening spring of the recycling bag; 106 is a sealing lasso of the recycling bag; 107 is recycling On the open end of the bag Rubber band; 108 is the inner sheath of the recycling bag; 108-1 is the distal end of the inner sheath of the recycling bag; 108-2 is the proximal end of the inner sheath of the recycling bag; 109 is the outer sheath of the recycling bag; 109-1 is recycling The distal end of the outer sheath of the bag; 109-2 is the proximal end of the outer sheath of the recovery bag; 110 is the slot of the recovery lasso on the recovery bag; 111 is the knot of the lasso of the recovery bag; 112 is on the inner sheath of the recovery bag 113 is the handle of the inner sheath of the recovery bag; 114 is the handle of the outer sheath; 115 is the positioning knob; 116 is the air bag of the recovery bag; 117 is the inflation tube of the air bag type recovery bag. 201 is a prior art biological tissue recovery bag; 202 is an open end of the prior art recovery bag; 203 is a closed end of the prior art recovery bag; 204 is a prior art flexible wall; 205 is a sheet of the prior art recovery bag Open the spring; 206 is the sealing lasso of the recovery bag of the prior art; 207 is the opening of the installation slot of the spring on the open end of the prior art biological tissue recovery bag. detailed description

As shown in FIG. 1, the in vivo biological tissue recovery and treatment device of the present invention firstly removes the excised biological tissue 18 into the recovery bag 101, and then extends into the protective cover 1, and the protective cover 1 is opened by the expansion spring 6. The open end 2 of the protective cover and the open end 102 of the recovery bag are sealed by magnetic anastomosis to form a closed container 27 which is isolated from the surrounding biological tissues. Through the through hole 5 in the protective cover, firstly extend into the C0 ₂ inflatable tube 12, and The closed container formed by the protective cover and the recovery bag bulges, and then extends into the flushing tube 17 and the crusher 15, and in this closed container, the biological tissue 18 is crushed, washed, and sucked out of the body. When performing a surgical operation, the flow rate of the CO ₂ inflation tube 12 is greater than the flow rate of the gas drawn by the flushing tube 17.

The recycling bag 101 and the flexible wall 4 of the protective cover are made of transparent material. At the same time, since the flexible wall 4 expands and bulges, the flexible wall 104 of the recycling bag is opened. The transparency is good, and the surgical operation can be performed under the direct view of the endoscope. After completion of the processing operation of the biological tissue 18, respectively, the withdrawal of breaker 15, C0 ₂ fill tube 12, suction tube punch 17, and then through the protective cover 8 inner sheath 10 retracted into the outer sheath, the withdrawal of the protective cover 1, the final withdrawal出 cycling bag 101.

As shown in FIG. 2, the opening spring 6 of the protective cover uses a shape memory alloy wire mesh, and is shaped into a special shape with a small middle and two large ends, and the opening spring 105 of the recovery bag matching the same also uses a shape memory alloy wire mesh. The shape of the opened recycling bag 101 is shaped to match the shape of the protective cover 1. In clinical use, the biological tissue 18 is first incorporated into the recovery bag 101, and then the protective cover 1 is released in the open end 102 of the recovery bag. The open ends 2 of the two protective covers that match each other are pressed against the open end 102 of the recovery bag. The respective flexible walls 4, 104 form a mechanical elastic seal. Through the through hole 5 of the protective cover, a surgical instrument can be put in, and the biological tissue 18 in the recovery bag is broken and sucked out. In the figure, the direction indicated by the arrow is the direction in which the biological pipe 18 is sucked out by the suction pipe 17, and the cutter head of the crusher 15 is connected to the front end of the rotation axis indicated by the rotation arrow. The positioning button 14 is used to fix the relative position of the inner sheath 8 and the outer sheath 10.

As shown in FIG. 2, by pulling the sealing lasso 106 of the recovery bag, the recovery bag 101 can be retracted into the inner sheath 108 and taken out of the body. The outer sheath 109 is sheathed outside the inner sheath 108. The outer sheath chin 114 is installed at the proximal end of the outer sheath 109. The inner sheath handle 113A Mounted at the proximal end of the inner sheath 108, a positioning button 115 is mounted on the outer sheath handle 114 for fixing the relative position of the outer sheath 109 and the inner sheath 108.

As shown in FIG. 3, the released shape of the protective cover 1 is a gradually opened waist drum shape. The open end 102 of the recovery bag can be moved to the thin waist of the open end 2 of the protective cover, and the lasso 106 is pulled. The slot 110 of the recovery lasso on the recovery bag is moved, and the open end 102 of the recovery bag can be fixed to the thin waist of the open end 2 of the protective cover through the knot 111, and sealed by mechanical anastomosis to form a seal isolated from the surrounding biological tissue. Container 27. The crusher 15 extends into the closed container 27 through the through hole 5 on the protective cover, and processes the biological tissue 18 in the recovery bag 101.

As shown in FIG. 4, the protective cover 1 is in the shape of a waist drum, and the open end 102 of the recovery bag is provided with a closed rubber band 107. When the open end 2 of the protective cover is deployed in the open end 102 of the recovery bag, the rubber band 107 generates The elastic force forms a mechanical fit seal with the thin waist of the open end 2 of the protective cover. After the biological tissue 18 has been processed, the recovery bag 101 can be retracted into the outer sheath 109 through the recovery hook 112 on the inner sheath 108 of the recovery bag and hooked on the lasso 106, and then taken out of the body.

As shown in FIG. 5, a groove 20 in the open end 2 of the flexible wall 4 of the protective cover is connected to the chemical adhesive injection hole 21 in the flexible wall 4. When the open end 2 of the protective cover coincides with the open end 102 of the recovery bag The chemical adhesive can be injected into the groove 20 at the joint of the open end 2 of the protective cover through the chemical adhesive injection hole 21 to form a chemical adhesive seal. After the biological tissue 18 has been processed, the protective cover 1 of the recovery bag 101 is adhered, and can be retracted to the outer sheath 10 through the protective cover's inner sheath 8 and taken out of the body.

As shown in FIG. 6, the airbag-type protective cover of the present invention and the prior art recovery bag are sealed through the airbag of the protective cover. The inside of the airbag 23 of the protective cover is inflated through the airbag inflating tube 24, so that the open end 2 of the protective cover forms a tight seal with the open end 202 of the prior art recovery bag. The inflation tube 24 is provided with a valve 25 for an airbag inflation tube.

The prior art biological tissue recovery bag 201 includes an open end 202 of the recovery bag, a closed end 203 of the recovery bag, and a flexible wall 204; a mounting slot 207 on the open end 202 is provided with an expansion spring 205, and a control sealing lasso 206 .

As shown in FIG. 7, the airbag-type protective cover 1 of the present invention enters the open end 102 of the recovery bag 101 through the inner sheath 108 of the recovery bag 101, and then inflates the airbag 23 with the inflation tube 24, so that the open end 2 of the protection cover and the The open end 102 of the recovery bag forms a fit seal.

As shown in FIG. 8, the airbag-type protective cover and the airbag-type recovery bag of the present invention are fitted and sealed to form a closed container in the body that can receive the removed biological tissue and is isolated from other normal biological tissues. In this embodiment, the airbag 23 structure is used instead of the opening spring 6 of the protective cover. In clinical use, the airbag is inflated into the airbag through the inflation tube 24 of the airbag, so that the open end 2 of the inflatable protective cover and the open end 102 of the inflated recovery bag are inflated. Form an anastomosis seal.

As shown in FIG. 9, a small through hole 26 is distributed on the flexible wall 4 of the open end 2 of the protective cover of the present invention, and the recovery bag and the protective cover are automatically opened in the body with a memory alloy opening spring, and are inserted into the endoscope 16 respectively. Crusher 15 and 17 suction tube; Under the negative pressure of the suction pipe 17, because the memory alloy opening spring prevents the closed container wall formed between the protective cover 1 and the recovery bag 101, the existence of the small through hole 26 on the open end 2 of the protective cover makes The flexible wall 4 of the open end 2 of the protective cover forms a tight seal with the flexible wall 104 of the open end 102 of the recovery bag.

As shown in FIG. 10, after the protective cover and the recovery bag of the present invention enter the body through the same incision, the protective cover and the recovery bag form a tight seal. First release the recovery bag 101 in the body, and then through the center hole of the inner sheath 108 of the recovery bag into the outer sheath 10 with the protective cover 1 inserted into the open end 102 of the recovery bag, and withdraw the protective cover 1 toward the handle. The outer sheath 8 makes the protective cover 1 open in the open end 102 of the recovery bag, and the open end 2 of the protective cover 1 and the open end 102 of the recovery bag 101 are magnetically connected or shape-matched to cause an anastomosis and seal to form isolation from surrounding biological tissues.的 closed container 27.

As shown in FIG. 11, it is a schematic structural diagram of the protective cover 1 when it is completely released in the body. In this embodiment, a nickel-titanium shape memory alloy wire mesh is used as the expansion spring 6 of the protective cover, and the expansion spring 6 is completely covered by the flexible polymer material 7 to form a flexible wall 4. The flexible material 7 is usually made of medical flexible polymer material or synthetic fiber-reinforced flexible polymer material, such as silicone rubber, polyurethane, polyethylene, polypropylene, silicone resin, vinyl resin or polytetrafluoroethylene, or polyester fiber Mesh, nylon fiber mesh, PTFE fiber mesh, metal fiber mesh reinforced silicone rubber, polyurethane, polyethylene, polypropylene, silicone resin, vinyl resin, or polytetrafluoroethylene. The open end 2 of the protective cover is usually larger than the closed end 3. The positioning button 14 is used to fix the relative position of the inner sheath 8 i and the outer sheath 10, and there are various designs, usually an axial fastening type such as a ratchet structure with concave and convex fit, or a radial fastening type such as an eccentric Structure, slider structure, etc .; the positioning button 14 in this embodiment adopts an eccentric wheel structure. When the positioning button 14 rotates clockwise, it drives the slider 14-1 to lock the inner sheath 8; when rotated counterclockwise, it can be loosened. With the pressure of the slider 14-1, the inner sheath 8 can move axially within the outer sheath 10.

In clinical use, when the outer sheath 8 is retracted backwards in the body, the protective cover 1 is exposed to the body. Due to the effect of body temperature, the shape memory alloy returns to its set shape and is rapidly deployed by the memory alloy expansion spring 6 The 4 flexible walls of the entire protective cover are opened to form a protective umbrella shape.

As shown in FIG. 12, the opening spring 6 of this embodiment uses a nickel-titanium shape memory alloy wire mesh, and the open end 2 of the opening spring 2 is covered with a medical silicon rubber with a transparent distribution of neodymium iron boron particles to form a magnetic material-containing The open end 2 is covered with a more transparent polypropylene film to cover the entire memory alloy mesh to form a flexible wall 4 of the protective cover 1. The open end 2 of the protective cover 1 of this structure contains a permanent magnet material NdFeB, which can automatically match with the open end 102 of the recycling bag containing a ferromagnetic material through a magnetic connection; the middle part of the protective cover 1 and the closing end 3 are used. The highly transparent polypropylene film allows biological tissues and surgical instruments in the protective cover 1 to be seen under an endoscope, which facilitates the crushing treatment of the biological tissues under direct viewing conditions.

The magnetic material in this embodiment may also be selected from other permanent magnetic materials, ferromagnetic materials, and electromagnetic materials, such as ferrite particles, stainless steel particles, iron powder particles, and other particle-type, fiber-type, or filament-type magnetic materials. As long as it has the characteristics of magnetic material, and can be automatically opened by the flexible material 7 in the process of the opening spring 6, the opening spring 6 or the flexibility is not restricted Any magnetic material that the wall 4 is deployed can be used.

A special embodiment is: Electromagnetic materials that can be controlled by current can achieve the same purpose. At this time, the electromagnetic materials can be connected to an external power source through a conductor. People in this field can make a variety of designs, but their characteristics It all lies in that the open end 2 of the protective cover and the open end 102 of the recycling bag are magnetically matched and sealed.

The same flexible material 7 as the protective cover can use various different flexible polymer materials or synthetic materials, as long as these materials are not constrained or restrained but do not affect the open spring during the expansion process of the open spring 6 of the protective cover. 6 Any material that drives the entire flexible wall 4 to the designed shape can be used. It is more desirable to use transparent flexible materials as the flexible material 7, such as transparent polyethylene, polypropylene, silicone rubber and other polymer materials. In order to increase the strength of the flexible wall, synthetic fiber-reinforced flexible polymer materials can also be used, such as silicone rubber, polyurethane, polyethylene, polypropylene, silicone resin, vinyl resin, or polytetrafluoride reinforced with polyester fiber or nylon fiber. Ethylene, etc. As shown in FIG. 13, the opening spring 6 of the protective cover is fixed on the distal end 8-1 of the inner sheath, and the opening spring 6 can move in the slot 22 on the flexible wall of the protective cover. When the protective cover 1 is to be withdrawn, the opening spring 6 can be pulled out first, and then the recovery line 19 on the closing end of the protective cover is clamped, and the protective cover 1 is retracted into the outer sheath 10 and taken out of the body; or through endoscopic surgery The small surgical incision was taken out of the body.

As shown in FIG. 14, the sealing lasso 106 of the recovery bag 101 is connected to the distal end of the inner sheath 108, the outer sheath 109 is sleeved on the inner sheath 108, the outer sheath 109 handle 114 is installed at the proximal end of the outer sheath 109, and the inner sheath handle 113 is mounted at the proximal end of the inner sheath 108, and a positioning button 115 is mounted on the outer sheath handle 114. The positioning button 115 can fix the relative position of the outer sheath 109 and the inner sheath 108. Loosen the positioning knob 115 and retract the inner sheath 108 backward to recover the recovery bag 101 into the outer sheath 109; to retract the outer sheath 109 and expose the recovery bag 101 completely outside the outer sheath 109 for recovery The bag 101 is unfolded.

FIG. 15 is a B-B cross-sectional view of the entire flexible wall containing the magnetic material recovery bag in FIG. 14, and 102 is an open end of the recovery bag. In this embodiment, the flexible wall 104 includes the magnetic material 9. The flexible wall 104 of the recycling bag 101 can also be made of a medical flexible polymer material or a synthetic fiber-reinforced flexible polymer material, such as silicone rubber, polyurethane, polyethylene, polypropylene, silicone resin, vinyl resin, or polytetrafluoride. Ethylene, etc., or polyester fiber web, nylon fiber web, Teflon fiber web, metal fiber web reinforced silicone rubber, polyurethane, polyethylene, polypropylene, silicone resin, vinyl resin, or polytetrafluoroethylene.

As shown in FIG. 16, the protective cover 1 is installed in front of the distal end 8-1 of the inner sheath, and the distal end 10-1 of the outer sheath, and the closing end 3 of the protective cover is connected to the distal end 8-1 of the inner sheath; 13 At the proximal end 8-2 of the inner sheath, the central hole of the handle 13 communicates with the central hole of the inner sheath 8 and the through hole 5 of the protective cover; the inner sheath 8 can move in the axial direction of the outer sheath 10, and the positioning button 14 is installed On the proximal end 10-2 of the outer sheath, the relative position of the inner sheath 8 and the outer sheath 10 can be fixed; Pull the outer sheath 10 at the end of the handle 13 of the inner sheath to release the protective cover 1 completely; move the outer sheath 10 forward, or fix the outer sheath 10, and retract the inner sheath 8 to the end of the handle 13 to recover the protective cover 1 completely. The outer sheath 10 is inside.

The working principle of the in vivo biological tissue recovery and treatment device according to the present invention:

As shown in FIG. 17, the recovery bag 101 is installed in front of the distal end 108-1 of the inner sheath, the distal end 109-1 of the outer sheath, and the handle 113 is mounted on the proximal end 108-2 of the inner sheath. The inner sheath 108 may be in the outer sheath 109 moves in the axial direction, the outer sheath handle 114 is installed on the proximal end 109-2 of the outer sheath, and the positioning knob 115 can fix the relative position of the inner sheath 108 and the outer sheath 109; loosening the positioning knob 115, the handle of the inner sheath Pull the outer sheath 109 at the 113 end to release the recovery bag 101 completely; move the outer sheath 109 forward, or fix the outer sheath 109, and the inner sheath 108 withdraw to the 113 end of the hand, and the recovery bag 101 can be completely recovered to the outer sheath 109 Inside.

As shown in FIG. 18, in clinical use, firstly, the slender outer sheath 109 equipped with the recovery bag 101 is introduced into the body through a small incision, the outer sheath 109 is pulled back to release the recovery bag 101, and then the excised biological tissue 18 is incorporated into the body. Inside the recovery bag 101.

As shown in FIG. 16, FIG. 19, and FIG. 20, the elongated outer sheath 10 on which the protective cover 1 of the present invention is installed is extended through a small incision into the open end 102 of the recovery bag that is opened and contains the biological tissue 18. By pulling the outer sheath 10 toward the handle, the protective cover 1 automatically opens under the action of the expansion spring 6, so that the open end 2 of the protective cover and the open end 102 of the recovery bag form a tight seal, forming a cut-out The biological tissue 18 is a closed container that is isolated from the surrounding normal biological tissue.

As shown in FIG. 21, surgical instruments such as a breaker, a surgical scissors, an electric knife, an ultrasonic knife, and other surgical instruments that break biological tissues, a suction tube, and an endoscope are extended from the through hole 5 of the protective cover. While disrupting the biological tissues, the broken biological tissues and interstitial fluid are sucked out of the body, and the operation process can be viewed directly through the endoscope.

Finally, after the biological tissue fragments and interstitial fluid are completely sucked out of the body, surgical instruments such as a breaker, a surgical scissors, an electric knife, an ultrasonic knife, a suction tube, and an endoscope are withdrawn, and finally the protective cover 1 and the recovery bag 101 are withdrawn.

It should be noted that the structure disclosed and described herein may be replaced with other structures having the same effect. At the same time, the embodiment described in the present invention is not the only structure for realizing the present invention. It adopts electromagnetic anastomosis and is controlled by external power supply. When the shape spring is used for the expansion spring, the shape recovery of the shape memory alloy expansion spring is controlled by the external power supply. In addition, the protective cover can be passed through the center hole of the inner sheath of the recovery bag. It can be released and recovered, thereby reducing the surgical incision by sequentially releasing or recovering the protective cover and the recovery bag in one incision. In addition, the protective cover can have multiple through holes for surgical instruments to facilitate surgical operations. Although the preferred embodiments of the present invention have been described and described herein, those skilled in the art will clearly know that these embodiments are merely illustrations, and those skilled in the art can make countless changes, improvements and improvements. Instead, without departing from the present invention, the protection scope of the present invention should be defined according to the spirit and scope of the claims appended to the present invention.

Claims

The device for recovering and treating biological tissues according to claim, comprising: a protective cover (1) capable of receiving biological tissues and a recovery bag (101), wherein the recovery bag (101) and the protective cover (1) are hermetically sealed at A closed container (27) isolated from surrounding biological tissue is formed in the body; a through-hole (5) through which surgical instruments can enter and exit is connected to the closed container (27).

The in vivo biological tissue recovery and processing device according to claim 1, characterized in that the protective cover (1) comprises a flexible wall (4), an open end (2), a closing end (3), and a through hole (5) The recovery bag (101) includes a flexible wall (104), an open end (102), and a closed end (103); the open end (2) of the protective cover (1) and the recovery bag

The open end (102) of (101) forms an anastomotic seal, and the through hole (5) in the protective cover (1) allows surgical instruments to pass through and into the recovery bag (101).

7. The in vivo biological tissue recovery and treatment device according to claim 1 and 2, characterized in that: the open end (2) of the protective cover (1) and the open end (102) of the recovery bag (101) contain magnetic material to protect The open end (2) of the cover (1) and the open end (102) of the recovery bag (101) form a magnetically sealed anastomosis.

The in vivo biological tissue recovery and treatment device according to claim 1 and 2, characterized in that: the open end (2) of the protective cover (1) has a shape matching the open end (102) of the recovery bag (101), The open end (2) of the protective cover (1) and the open end (102) of the recovery bag (101) are matched to form a tight seal.

7. The in vivo biological tissue recovery and treatment device according to claim 1 and 2, characterized in that: the open end (2) of the protective cover (1) and the sealing lasso (106) or the elastic sealing rubber band (107) The open end (102) of the recovery bag (101) forms a snug seal.

7. The in vivo biological tissue recovery and treatment device according to claim 1 and 2, characterized in that: the open end (2) of the protective cover (1) and the open end (102) of the recovery bag (101) are passed through a chemical adhesive Form an anastomosis seal. The in vivo biological tissue recovery and processing device according to claim 1, characterized in that: the protective cover (1) or the recovery bag (101) adopts an airbag structure, and the open end of the protective cover (1) of the inflated airbag structure ( 2) Form an anastomosis seal with the open end (102) of the recovery bag (101); or Open end (102) of the recovery bag (101) of the inflated airbag structure and an open end (2) of the protective cover (1) form an anastomosis seal ; Or the open end (2) of the protective cover (1) of the inflated airbag structure forms an anastomosis with the open end (102) of the recovery bag (101) of the inflated airbag structure. 7. The in vivo biological tissue recovery and treatment device according to claim 1 and 2, characterized in that: the flexible wall (4) of the protective cover (1) is composed of an expansion spring (6) and a flexible material (7), and is formed Composite structure with open spring (6) as skeleton and flexible material (7) as base; open end (102) of recovery bag (101) or flexible wall of recovery bag

(104) is composed of an expansion spring (105) and a flexible material (7) to form a composite structure with the expansion spring (105) as a skeleton and a flexible material (7) as a matrix.

9. The in vivo biological tissue recovery and treatment device according to claim 8, characterized in that: the expansion spring (6) of the protective cover (1) or the expansion spring (105) of the recovery bag (101) is energy-efficient. The deformed shape is stored, and when released, it can be returned to the original or near original shape.

10. The in vivo biological tissue recovery and treatment device according to claim 9, characterized in that: the manufacturing material of the expansion spring (6) of the protective cover (1) or the expansion spring (105) of the recovery bag (101) It is a shape memory alloy wire, or a shape memory alloy wire mesh, or an alloy spring steel. 11. The in vivo biological tissue recovery and treatment device according to claim 1, wherein:

The closing end (3) of the protective cover (1) is fixed to the distal end (8-1) of the inner sheath (8) of the protective cover (1), and the inner sheath (8) of the protective cover (1) has at least one The through hole is connected with the through hole (5) on the protective cover (1), and the protective cover (1) can be retracted to the outer sheath (10) of the protective cover (1) through the inner sheath (8) of the protective cover (1). Inside;

The open end (102) of the recycling bag (101) is fixed on the inner sheath (108) of the recycling bag, and the recycling bag (101) is retracted to the recycling bag (101) through the inner sheath (108) of the recycling bag (101). Inside the outer sheath (109).

12. The in vivo biological tissue recovery and processing device according to claim 1 and 2, characterized in that:

A recovery line (19) is installed at the closing end (3) of the protective cover (1), and the protective cover (1) can be retracted into or removed from the outer sheath (10) of the protective cover (1) through the recovery line (19). In vitro

A sealing lasso (106) is installed at the open end (102) of the recovery bag (101), and the recovery bag (101) can be retracted to the outer sheath (109) of the recovery bag (101) by pulling the sealing lasso (106). Inside or out of the body.

13. The in vivo biological tissue recovery and processing device according to claim 7, characterized in that:

The expansion spring (6) of the flexible wall (4) of the protective cover (1) can be extracted from the base of the flexible material (7); the expansion spring (105) of the recovery bag can be taken from the open end of the recovery bag (102).