US1618261A - Viscera retainer for use in abdominal operations - Google Patents

Viscera retainer for use in abdominal operations Download PDF

Info

Publication number
US1618261A
US1618261A US1618261DA US1618261A US 1618261 A US1618261 A US 1618261A US 1618261D A US1618261D A US 1618261DA US 1618261 A US1618261 A US 1618261A
Authority
US
United States
Prior art keywords
section
handle
sections
middle section
blade
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Publication date
Application granted granted Critical
Publication of US1618261A publication Critical patent/US1618261A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0493Protective devices for suturing, i.e. for protecting the patient's organs or the operator

Definitions

  • This invention relates to surgical instru ments and particularly to means for retaining the abdominal viscera in place and from protrusion while effecting a closure of the peritoneum.
  • the general object of this invention is to provide an instrument for this purpose which is so constructed that it may readily be introduced into the wound or removed therefrom and in this connection to provide an instrument formed in a plurality of longitudinally extending sections which are operatively locked together while the peritoneum is being initially sewed up and and in which the sections may be withdrawn one by one as the sewing nears completion.
  • a further object is to provide a device of this character having a broad and flattened portion which when introduced in the wound inside of the parietal wall may be held against this wall with sufiicient firmness to prevent any of the viscera from projecting into the wound and, therefore, preventing the introduction of the suture which is to close the peritoneum.
  • Figure 1 is an edge elevation of my 111- strument
  • Fig. 2 is a top plan view with the several sections engaged with each other and ready for introduction into the wound;
  • Fig. 3 is a fragmentary top plan view with the sections separated
  • Fig. 4 is a bottom plan view like Figure 3 and showing the sections separated;
  • Fig. 5 is a section on the line 55 of Figure 1;
  • Fig. 6 is a longitudinal fragmentary section through the handle of the device and showing the latching means
  • Fig. 7 is a section on the line 77 of Figure 2;
  • Fig. 8 is a section on the line 88 of Figure 3;
  • Fig. 9 is a perspective View of the instrument in actual use.
  • the instrument is formed of three separate sections, A being the middle section and B and C being the lateral sections.
  • the middle section consists of the flat and rela- 192'6. Serial No. 105,033.
  • the rear portion' The rear end of the handle so formed is downwardly bent as at 13.
  • the forward extremity of the blade 10 is formed with two forwardly projecting relatively short pins 14 disposed on each side of the medial line of the blade.
  • the rear portion of the blade 10 is depressed as at 15, this depressed portion extending downward and rearward at a slight angle to, the face of the blade 10, there being convergent shoulders 16 which define the forward boundary of this depressed portion 15.
  • the section B consists of a flat blade 17 the same width at its middle as the blade 11 and adapted to be disposed in edge contact with the same and with its upper face flush with the upper face of the blade 10.
  • the forward end of this blade 17 is beveled at its outer corner as at 18, and the forward extremity of the blade 17 is inwardly extended as at 19, this inward extension beingv formed with a recess 20 to receive one of the pins 1
  • the rear portion of theblade 14 is inwardly extended at 21 so that the inner edge face of this angular portion 21 will bear against the corresponding shoulder 16.
  • This blade 17 is also provided with the upwardly extending shanlr 22 corresponding to shank 11, which shank extends upwardly and rearwardly and extends rearwardly parallel to the face of the blade as at 23.
  • the shank 22 and the handle portion 23 have a'width equal to half the width of the shank 11 and in use overlie this shank.
  • the section C is constructed in the same manner as the section B and the several reference numerals have been used to designate like parts.
  • the section C is complementary to the section B so that when the sections B and C are disposed in engagement with the section A, the blades 17 of the sections B and G will lie against and flush with the blade 10, as illustrated in Figure 2, and the portions 21 of the two lateral sections will fit against the shoulders 16 and the handle portions 23 will extend over and rest upon the handle portions 11 and 12.
  • each of these latches being longitudinally slotted and guided by two screw pins 27 extending through the latches and into the corresponding handle sections.
  • the forward end of each latch is beveled and each pin or stud 25 is notched to receive the beveled end of the corresponding latch.
  • a spring 28 is disposed within the slot 29 of the latch and urges the latch forward and into engagement with the cor- 4
  • a washer-like plate 30 is disposed between the screw heads of the screws 27 and the face of each latch, thus holding the latch firmly in place but permitting its sliding movement.
  • Each latch at its rear end is angularly bent as at 31 to provide a finger hold whereby the latch may be retracted.
  • the under face of the rear end of each blade portion 17 is recessed at 32 or depressed, this depressed or recessed portion 32 being complementary to one half of the recessed portion 15 on the section A so that the edgefaces of the portions 21 will abut against the shoulders 16 and the recessed portions 32 will lie over the recessed portions 15 and thus the faces of all three blade portions rearward to the handle'will be disposed in one plane or flush with each other.
  • this instrument notonly holds the viscera from protruding into thewound but supports the peritoneum so that stitches may be more readily taken therethrough.
  • a visceral retainer consisting of amiddle section and two lateral sections, each section having a blade portion and a handle portion, the sections being detachably engaged with each other with the blade portions lying in the same plane, each lateral section when detached from the middle section being from a wound.
  • a visceral retainer consisting of amiddle section and two lateral sections, each section having a blade portion and a handle portion, the sections being detachably engaged with each other with the blade portions lying in the same plane, thelateral sect-ions being each detachable indepenldently from the middle section.
  • a visceral retainer consisting of a middle section and two lateral sections, the middle section having a blade portion, an upwardly and rearwardly extending shank, and
  • a longitudinally extending handle the lateral sections each having a blade portion, an upwardly and rearwardly extending shank, and a rearwardly extending handle, the shank and handle of each lateral section having a width approximately half the width of the shank and handle of the middle section, the upper face of the blade portion of the middle section at the rear thereof being depressed, this depression being defined by two rearwardly converging shoulders, the rear of each lateral section being inwardly offset to provide an inner inclined; edge adapted to bear against the corresponding shoulder of the middle section, the under face of the laterally offset portion being reduced in thickness whereby to permit the laterally offset portions to fit over the depression at the rear end of the middle section and permit the handle portions of the lateral sections to overlie the handle portion of the middle section, and means for engaging the sections to each other.
  • a visceral retainer consisting of a middle section and two lateral sections, the middle section having a blade portion, an upwardly and rearwardly extending shank, and a longitudinally extending handle, the lateral sections each having a blade portion, an upwardly and rearwardly extending shank and a rearwardly extending handle, the shank and handle of each lateral section having a width approximately half the width of the shank and handle of the middle section, the upper face of the blade portion of the middle section at the rear thereof being depressed, this depression being defined by two rearwardly converging shoulders, the rear of each lateral section being inwardly offset to provide an inner inclined edge adapted to bear against the corresponding shoulder of the middle section, the under face of the laterally offset portion being reduced in thickness whereby to permit the laterally ofi'set portions to fit over the depression at the rear end of the middle section and permit the handle portions of the lateral sections to overlie the handle portion of the middle section, and means for engaging the sections to each other comprising coacting pins and recesses
  • a visceral retainer consisting of a middle section and two lateral sections, the middle section having a blade portion, at upwardly and rearwardly extending shank, and a longitudinally extending handle, the lateral sections each having a blade portion, an upwardly and rearwardly extending shank, and a rearwardly extending handle, the shank and handle of each lateral section having a width approximately half the width of the shank and handle of the middle section, the upper face of the blade portion of the middle section at the rear thereof being depressed, this depression being defined by two rearwardly converging shoulders, the rear of each lateral section being inwardly offset to provide an inner inclined edge adapted to bear against the corresponding shoulder of the middle section, the up per face of the laterally offset portion being reduced in thickness whereby to permit the laterallyoffset portions to fit over the depression at the rear end of the middle section and permit the handle portions of the lateral sections to overlie the handle portion of the middle section, and means for engaging the sections to each other comprising latches mounted upon the rear ends of

Description

Feb. 22
H. JCARBEGAST VISCERA RETAINER FOR USE I ABDOMINAL OPERATIONS 2 Sheets-Sheet 1 Filed May i, "19
mifirh asi 55 u Feb. 22, 1927. 3,618,261
11. .1. ARBOGAST I Y VISCERA RETAINER FOR USE IN ABDOMINAL OPERATIONS Filed May 1, 1 92s 2 Sheets-Sheet 2 Peri Zaneum 71mm, MW? 5 6 .32 A; /0 7 33 that I-IOYE J. ARBOGAST, OF ROCK SPRINGS, WYOMING.
VISCERA RETAINER FOR USE IN ABDOMINAL OPERATIONS.
Application filed May 1,
This invention relates to surgical instru ments and particularly to means for retaining the abdominal viscera in place and from protrusion while effecting a closure of the peritoneum.
The general object of this invention is to provide an instrument for this purpose which is so constructed that it may readily be introduced into the wound or removed therefrom and in this connection to provide an instrument formed in a plurality of longitudinally extending sections which are operatively locked together while the peritoneum is being initially sewed up and and in which the sections may be withdrawn one by one as the sewing nears completion.
A further object is to provide a device of this character having a broad and flattened portion which when introduced in the wound inside of the parietal wall may be held against this wall with sufiicient firmness to prevent any of the viscera from projecting into the wound and, therefore, preventing the introduction of the suture which is to close the peritoneum.
Other objects have to do with the details.
of construction and arrangement of parts to appear more fully hereinafter.
My invention is illustrated in the accompanying drawings wherein Figure 1 is an edge elevation of my 111- strument;
Fig. 2 is a top plan view with the several sections engaged with each other and ready for introduction into the wound;
Fig. 3 is a fragmentary top plan view with the sections separated;
Fig. 4 is a bottom plan view like Figure 3 and showing the sections separated;
Fig. 5 is a section on the line 55 of Figure 1;
Fig. 6 is a longitudinal fragmentary section through the handle of the device and showing the latching means;
Fig. 7 is a section on the line 77 of Figure 2; I
Fig. 8 is a section on the line 88 of Figure 3;
Fig. 9 is a perspective View of the instrument in actual use.
Referring to these drawings, and particularly to Figures 1 and 3, it will be seen that the instrumentis formed of three separate sections, A being the middle section and B and C being the lateral sections. The middle section consists of the flat and rela- 192'6. Serial No. 105,033.
tively narrow blade 10. The rear portion' The rear end of the handle so formed is downwardly bent as at 13. The forward extremity of the blade 10 is formed with two forwardly projecting relatively short pins 14 disposed on each side of the medial line of the blade. The rear portion of the blade 10 is depressed as at 15, this depressed portion extending downward and rearward at a slight angle to, the face of the blade 10, there being convergent shoulders 16 which define the forward boundary of this depressed portion 15.
The section B consists of a flat blade 17 the same width at its middle as the blade 11 and adapted to be disposed in edge contact with the same and with its upper face flush with the upper face of the blade 10. The forward end of this blade 17 is beveled at its outer corner as at 18, and the forward extremity of the blade 17 is inwardly extended as at 19, this inward extension beingv formed with a recess 20 to receive one of the pins 1 The rear portion of theblade 14 is inwardly extended at 21 so that the inner edge face of this angular portion 21 will bear against the corresponding shoulder 16. This blade 17 is also provided with the upwardly extending shanlr 22 corresponding to shank 11, which shank extends upwardly and rearwardly and extends rearwardly parallel to the face of the blade as at 23. The shank 22 and the handle portion 23 have a'width equal to half the width of the shank 11 and in use overlie this shank.
The section C is constructed in the same manner as the section B and the several reference numerals have been used to designate like parts. The section C is complementary to the section B so that when the sections B and C are disposed in engagement with the section A, the blades 17 of the sections B and G will lie against and flush with the blade 10, as illustrated in Figure 2, and the portions 21 of the two lateral sections will fit against the shoulders 16 and the handle portions 23 will extend over and rest upon the handle portions 11 and 12.
Adjacent the rear ends of the portions 23 are apertures 2e and the handle portion 12 of section A is provided with a pair of upwardly projecting studs 25. adapted to pass responding pin.
through these apertures 24;. Mounted upon the rear ends of the handle sections 23 are slidable latches 26, each of these latches being longitudinally slotted and guided by two screw pins 27 extending through the latches and into the corresponding handle sections. The forward end of each latch is beveled and each pin or stud 25 is notched to receive the beveled end of the corresponding latch. A spring 28 is disposed within the slot 29 of the latch and urges the latch forward and into engagement with the cor- 4 Preferably a washer-like plate 30 is disposed between the screw heads of the screws 27 and the face of each latch, thus holding the latch firmly in place but permitting its sliding movement. Each latch at its rear end is angularly bent as at 31 to provide a finger hold whereby the latch may be retracted. The under face of the rear end of each blade portion 17 is recessed at 32 or depressed, this depressed or recessed portion 32 being complementary to one half of the recessed portion 15 on the section A so that the edgefaces of the portions 21 will abut against the shoulders 16 and the recessed portions 32 will lie over the recessed portions 15 and thus the faces of all three blade portions rearward to the handle'will be disposed in one plane or flush with each other. I
It will be seen that with this construction the lateral sections 13 and C will be held in engagement with the middle section A so long'a's the latches are projected into em gagement'with the studs 25 but that when a latch 26 is retracted, the corresponding section'may then be slightly lifted to withdraw the stud 25 from the aperture 24: and then slightly shifted forward which will de- 'tach the portion 19 from its engagement with the corresponding pin let and thus the several sections may be detached from each other within a wound and withdrawn through the opening of the wound.
In the actual use of this device the three sections are engaged with each other as shown in Figures 1, 2 and 9 an'dthe broad fiat portion of the instrument is introduced into the wound inside of the parietal peritoing slightly raised to detach it from engage ment with the'corresponding pin 25, is
-pushed very slightly ahead so as to release it from its engagement with the corresponding pin 14. Then this section is easily withdrawn since its width is no greater than the width of the neck of the instrument. The other section is then withdrawn in a similar manner and lastly the middle section is withdrawn and then the last stitch or two which are necessary to finish the closure are taken.
In the actual operation a small retractor is placed so as to retract the muscular fascia, next the apices of the wound are grasped by small forceps and then the instrument is inserted. When this has been acco1n-' plished the operator is ready to commence stitching up the wound. it will be seen that this device is very simple,- is very effective for the purpose intended, that it is easily introduced and removed without injury to the parts and that while it is particularly designed for the purpose disclosed it is, not necessarily limited to this purpose as it might be used in other operations.
It will be noted that. this instrumentnotonly holds the viscera from protruding into thewound but supports the peritoneum so that stitches may be more readily taken therethrough.
I claim r 1. A visceral retainer-consisting of a plu plane and the handle portions of certain sections overlapping.
3. A visceral retainer consisting of amiddle section and two lateral sections, each section having a blade portion and a handle portion, the sections being detachably engaged with each other with the blade portions lying in the same plane, each lateral section when detached from the middle section being from a wound. I
4. A visceral retainer consisting of amiddle section and two lateral sections, each section having a blade portion and a handle portion, the sections being detachably engaged with each other with the blade portions lying in the same plane, thelateral sect-ions being each detachable indepenldently from the middle section. a
5. A visceral retainerconsisting of amiddle section and two lateral sections, the middle section having a blade portion and a handle ortion, the two lateral sections coacting independently withdrawable with the middle section, each lateral section V I middle section, the handle portion of the lateral sections being adapted to overlie the handle portion of the middle section, and means on each lateral section for detachably locking it to the middle section.
6. A visceral retainer consisting of a middle section and two lateral sections, the middle section having a blade portion, an upwardly and rearwardly extending shank, and
i a longitudinally extending handle, the lateral sections each having a blade portion, an upwardly and rearwardly extending shank, and a rearwardly extending handle, the shank and handle of each lateral section having a width approximately half the width of the shank and handle of the middle section, the upper face of the blade portion of the middle section at the rear thereof being depressed, this depression being defined by two rearwardly converging shoulders, the rear of each lateral section being inwardly offset to provide an inner inclined; edge adapted to bear against the corresponding shoulder of the middle section, the under face of the laterally offset portion being reduced in thickness whereby to permit the laterally offset portions to fit over the depression at the rear end of the middle section and permit the handle portions of the lateral sections to overlie the handle portion of the middle section, and means for engaging the sections to each other.
7. A visceral retainer consisting of a middle section and two lateral sections, the middle section having a blade portion, an upwardly and rearwardly extending shank, and a longitudinally extending handle, the lateral sections each having a blade portion, an upwardly and rearwardly extending shank and a rearwardly extending handle, the shank and handle of each lateral section having a width approximately half the width of the shank and handle of the middle section, the upper face of the blade portion of the middle section at the rear thereof being depressed, this depression being defined by two rearwardly converging shoulders, the rear of each lateral section being inwardly offset to provide an inner inclined edge adapted to bear against the corresponding shoulder of the middle section, the under face of the laterally offset portion being reduced in thickness whereby to permit the laterally ofi'set portions to fit over the depression at the rear end of the middle section and permit the handle portions of the lateral sections to overlie the handle portion of the middle section, and means for engaging the sections to each other comprising coacting pins and recesses formed respectively upon the forward ends of the lateral and middle sections and latches detachably engaging the handle of each lateral section with the handle of the middle section.
8. A visceral retainer consisting of a middle section and two lateral sections, the middle section having a blade portion, at upwardly and rearwardly extending shank, and a longitudinally extending handle, the lateral sections each having a blade portion, an upwardly and rearwardly extending shank, and a rearwardly extending handle, the shank and handle of each lateral section having a width approximately half the width of the shank and handle of the middle section, the upper face of the blade portion of the middle section at the rear thereof being depressed, this depression being defined by two rearwardly converging shoulders, the rear of each lateral section being inwardly offset to provide an inner inclined edge adapted to bear against the corresponding shoulder of the middle section, the up per face of the laterally offset portion being reduced in thickness whereby to permit the laterallyoffset portions to fit over the depression at the rear end of the middle section and permit the handle portions of the lateral sections to overlie the handle portion of the middle section, and means for engaging the sections to each other comprising latches mounted upon the rear ends of the handle portions of the lateral sections, studs projecting from the middle section, the handles of the lateral sections being perforated for the reception of said studs and the latches engaging said studs, the forward ends of the lateral sections being inwardly extended to'engage around the forward end of the blade portion of the middle section, the middle section being provided with outwardly projecting studs, and the curved ends of the lateral sections having recesses to receive said studs.
In testimony whereof I hereunto afi'ix my signature.
HOYE J. ARBOGAST.
loo
US1618261D Viscera retainer for use in abdominal operations Expired - Lifetime US1618261A (en)

Publications (1)

Publication Number Publication Date
US1618261A true US1618261A (en) 1927-02-22

Family

ID=3411834

Family Applications (1)

Application Number Title Priority Date Filing Date
US1618261D Expired - Lifetime US1618261A (en) Viscera retainer for use in abdominal operations

Country Status (1)

Country Link
US (1) US1618261A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2841148A (en) * 1957-06-21 1958-07-01 Godfrey J Kadavy Viscera retainer for use in abdominal operations
US5431173A (en) * 1991-05-29 1995-07-11 Origin Medsystems, Inc. Method and apparatus for body structure manipulation and dissection
US5501653A (en) * 1991-05-29 1996-03-26 Origin Medsystems, Inc. Abdominal wall lifting retractor with hinged cross-member
US5505689A (en) * 1991-05-29 1996-04-09 Origin Medsystems, Inc. Propertioneal mechanical retraction apparatus
US5520609A (en) * 1991-05-29 1996-05-28 Origin Medsystems, Inc. Apparatus and method for peritoneal retraction
US5676636A (en) * 1994-07-22 1997-10-14 Origin Medsystems, Inc. Method for creating a mediastinal working space
US5716327A (en) * 1991-05-29 1998-02-10 Origin Medsystems, Inc. Body wall retraction system for wide cavity retraction
US6736141B2 (en) * 2000-12-15 2004-05-18 David L. Freedman Surgical aid
US20110190591A1 (en) * 2010-01-29 2011-08-04 Palmer Andrew K Surgical retractor
WO2018068152A1 (en) * 2016-10-14 2018-04-19 University Of Saskatchewan Surgical retractor device to protect underlying tissue
US10687797B2 (en) 2008-12-18 2020-06-23 Howmedica Osteonics Corp. Lateral access system for the lumbar spine
US11166709B2 (en) 2016-08-23 2021-11-09 Stryker European Operations Holdings Llc Instrumentation and methods for the implantation of spinal implants
US11191532B2 (en) 2018-03-30 2021-12-07 Stryker European Operations Holdings Llc Lateral access retractor and core insertion
US11413029B2 (en) 2018-10-24 2022-08-16 Stryker European Operations Holdings Llc Anterior to psoas instrumentation
US11564674B2 (en) 2019-11-27 2023-01-31 K2M, Inc. Lateral access system and method of use

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2841148A (en) * 1957-06-21 1958-07-01 Godfrey J Kadavy Viscera retainer for use in abdominal operations
US5941819A (en) * 1991-05-29 1999-08-24 Origin Medsystems, Inc. Apparatus for creating a mediastinal working space
US5501653A (en) * 1991-05-29 1996-03-26 Origin Medsystems, Inc. Abdominal wall lifting retractor with hinged cross-member
US5505689A (en) * 1991-05-29 1996-04-09 Origin Medsystems, Inc. Propertioneal mechanical retraction apparatus
US5520609A (en) * 1991-05-29 1996-05-28 Origin Medsystems, Inc. Apparatus and method for peritoneal retraction
US5634883A (en) * 1991-05-29 1997-06-03 Origin Medsystems, Inc. Apparatus for peritoneal retraction
US5643178A (en) * 1991-05-29 1997-07-01 Origin Medsystems, Inc. Method for peritoneal retration
US5431173A (en) * 1991-05-29 1995-07-11 Origin Medsystems, Inc. Method and apparatus for body structure manipulation and dissection
US5716327A (en) * 1991-05-29 1998-02-10 Origin Medsystems, Inc. Body wall retraction system for wide cavity retraction
US5676636A (en) * 1994-07-22 1997-10-14 Origin Medsystems, Inc. Method for creating a mediastinal working space
US5823946A (en) * 1994-07-22 1998-10-20 Origin Medsystems, Inc. Method for creating a mediastinal working space
US6736141B2 (en) * 2000-12-15 2004-05-18 David L. Freedman Surgical aid
US10687797B2 (en) 2008-12-18 2020-06-23 Howmedica Osteonics Corp. Lateral access system for the lumbar spine
US11925342B2 (en) 2008-12-18 2024-03-12 Howmedica Osteonics Corp. Lateral access system for the lumbar spine
US20110190591A1 (en) * 2010-01-29 2011-08-04 Palmer Andrew K Surgical retractor
US11166709B2 (en) 2016-08-23 2021-11-09 Stryker European Operations Holdings Llc Instrumentation and methods for the implantation of spinal implants
WO2018068152A1 (en) * 2016-10-14 2018-04-19 University Of Saskatchewan Surgical retractor device to protect underlying tissue
US11191532B2 (en) 2018-03-30 2021-12-07 Stryker European Operations Holdings Llc Lateral access retractor and core insertion
US11911016B2 (en) 2018-03-30 2024-02-27 Stryker European Operations Holdings Llc Lateral access retractor and core insertion
US11413029B2 (en) 2018-10-24 2022-08-16 Stryker European Operations Holdings Llc Anterior to psoas instrumentation
US11564674B2 (en) 2019-11-27 2023-01-31 K2M, Inc. Lateral access system and method of use

Similar Documents

Publication Publication Date Title
US1618261A (en) Viscera retainer for use in abdominal operations
US8603042B2 (en) Safety needle device with snap feature and method of making same
US10220527B1 (en) Switchblade
US7314471B2 (en) Disposable scalpel with retractable blade
US2863444A (en) Liver retractor for cholecystectomies
US7322110B2 (en) Knife with trigger actuator for retractable blade
US6848185B2 (en) Utility knife
US1060350A (en) Intestine-protector.
US1613141A (en) Surgical retractor instrument
US8641680B2 (en) Safety needle device with snap feature
US20170099904A1 (en) Dual Retractable Seam Ripper
US20090192538A1 (en) Safety scalpel handle
US1960130A (en) Knife
US8832943B2 (en) Retractable scissors
US7625357B2 (en) Safety winged needle structure
US2601331A (en) Key retainer
US1448305A (en) Interchangeable-blade-operating knife
US2474857A (en) Adjustable retractor
US2547608A (en) Fowl eviscerating tool
JP6590677B2 (en) Safety belt hook for work at height
US3197097A (en) Collapsible lace hook
US1546709A (en) Safety hunting knife
AU2003267326A1 (en) Disposable scalpel with retractable blade
US1563233A (en) Knitting needle
US1348194A (en) Trocar