CN112043340A - Blocking forceps for small incision - Google Patents

Blocking forceps for small incision Download PDF

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Publication number
CN112043340A
CN112043340A CN202011052770.2A CN202011052770A CN112043340A CN 112043340 A CN112043340 A CN 112043340A CN 202011052770 A CN202011052770 A CN 202011052770A CN 112043340 A CN112043340 A CN 112043340A
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CN
China
Prior art keywords
arm
blocking
forceps
head
small incisions
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Pending
Application number
CN202011052770.2A
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Chinese (zh)
Inventor
顾春虎
韩跃虎
赵诣琳
王云雅
魏东明
高博
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Air Force Medical University of PLA
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Air Force Medical University of PLA
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Publication date
Application filed by Air Force Medical University of PLA filed Critical Air Force Medical University of PLA
Priority to CN202011052770.2A priority Critical patent/CN112043340A/en
Publication of CN112043340A publication Critical patent/CN112043340A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/2812—Surgical forceps with a single pivotal connection
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/2812—Surgical forceps with a single pivotal connection
    • A61B17/2841—Handles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B2017/12004—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for haemostasis, for prevention of bleeding

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Reproductive Health (AREA)
  • Vascular Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention discloses a pair of blocking forceps for a small incision, which comprises two forceps bodies hinged with each other, wherein each forceps body comprises a forceps arm, a handle, a blocking forceps head, a steering arm and an adjusting mechanism; the handle is connected with one end of the clamp arm, the other end of the clamp arm is connected with one end of the steering arm, the blocking clamp head is vertically arranged, the upper end of the blocking clamp head is connected with the other end of the steering arm, and a C shape is formed between the steering arm and the clamp arm, so that the blocking clamp head extends to one side of the handle; the adjusting structure is arranged on the steering arm and used for adjusting the height and the horizontal position of the blocking tong head; the blocking forceps solve the problem that the existing blocking forceps are difficult to operate due to the fact that the aorta blocking position is far away from a small incision.

Description

Blocking forceps for small incision
Technical Field
The invention relates to the field of medical instruments, in particular to a pair of blocking forceps for a small incision.
Background
In the minimally invasive cardiac surgery, after an extracorporeal circulation cannula is established and cooled, an aortic occlusion clamp is needed to block aortic blood flow so as to enable extracorporeal circulation to operate, and the cardiac surgery is implemented. When the minimally invasive cardiac surgery comprises small median incision and small axillary incision surgery, the surgical incision is small, and the aorta blocking position is located at the lower part of the chest wall, so that the distance from the aorta blocking position to the chest wall and a skin incision is long, the surgical visual field is small, and the requirements on instruments are high. The aorta occlusion forceps used clinically at present are straight forceps or 90-degree bent forceps made of common medical stainless steel materials, are short in whole length and single in angle and direction, are limited in the insertion direction when being inserted into the thoracic cavity, block an incision of an operation and are not beneficial to the operation.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a blocking clamp for a small incision, which can realize the rapid blocking of the aorta by changing the angle of the blocking clamp and adjusting the length of the blocking clamp.
The invention is realized by the following technical scheme:
a blocking forceps for small incision comprises two forceps bodies hinged with each other, wherein each forceps body comprises a forceps arm, a handle, a blocking forceps head, a steering arm and an adjusting mechanism;
the handle is connected with one end of the clamp arm, the other end of the clamp arm is connected with one end of the steering arm, the blocking clamp head is vertically arranged, the upper end of the blocking clamp head is connected with the other end of the steering arm, and a C shape is formed between the steering arm and the clamp arm, so that the blocking clamp head extends to one side of the handle;
the adjusting structure is arranged on the steering arm and used for adjusting the height and the horizontal position of the blocking tong head.
Preferably, the steering arm comprises a horizontal arm and a vertical arm which are connected end to end;
the upper end of the vertical arm is connected with the end part of the forceps arm, the lower end of the vertical arm is connected with one end of the horizontal arm, and the other end of the horizontal arm extends to one side of the handle and is connected with the upper end of the blocking forceps head.
Preferably, the included angle between the horizontal arm and the vertical arm is 90-120 degrees.
Preferably, the adjusting mechanism is a gear rack mechanism.
Preferably, the horizontal arm and the vertical wall are identical in structure and comprise a first arm and a second arm which are coaxial, and the first arm is connected with the second arm through a gear rack mechanism.
Preferably, the first arm is provided with a rack hole, a gear is arranged in the rack hole, the end part of the second arm is provided with a rack, and the rack is assembled in the rack hole and meshed with the gear.
Preferably, the end of the first arm is provided with a guide sleeve, and the guide sleeve is sleeved on the second arm.
Preferably, the gear is fixed in the rack hole through a rotating shaft, two ends of the rotating shaft are supported on the side wall of the first arm, and the rotating shaft is provided with a key hole for inserting a key to drive the gear to rotate.
Preferably, the gears on the two caliper bodies are coaxially arranged.
Preferably, a locking mechanism is arranged between the two handles and used for positioning the closed state of the forceps body.
Compared with the prior art, the invention has the following beneficial technical effects:
when the blocking forceps are used, the blocking forceps head extends into the chest through the small incision, then the blocking forceps are moved to one side of the handle through the handle, so that the chest wall is positioned in the C-shaped space, and the blocking forceps head bypasses the chest wall to reach the aorta blocking position below the chest wall, the aorta blocking is realized, and the problem that the aorta blocking position is far away from the small incision and the existing blocking forceps are difficult to operate is solved.
Drawings
FIG. 1 is a front view of the blocking clamp of the present invention;
FIG. 2 is a top view of the blocking clamp of the present invention;
FIG. 3 is an enlarged view of a portion of the blocking clamp of the present invention;
FIG. 4 is a left side view of a portion of the blocking clamp of the present invention;
FIG. 5 is a schematic view of the installation of the internal gear of the blocking clamp according to the present invention;
FIG. 6 is a schematic view of the installation of the rack of the blocking clamp of the present invention;
fig. 7 is a schematic structural view of the working portion of the blocking clamp of the present invention.
In the figure: 1. a clamp arm; 2. a handle; 3. blocking the tong head; 4. a horizontal arm; 5. a vertical arm; 7. a rack; 8. a locking mechanism; 11. a rack hole; 12. a gear; 13. a key hole; 14. a guide hole; 15. a guide sleeve; 16. a gear hole.
Detailed Description
The present invention will now be described in further detail with reference to the attached drawings, which are illustrative, but not limiting, of the present invention.
Referring to fig. 1-7, a pair of blocking forceps for small incision comprises two forceps bodies hinged with each other at the middle part, wherein each forceps body comprises a forceps arm 1, a handle 2, a blocking forceps head 3, a steering arm and an adjusting mechanism.
The handle 2 is connected with one end of the clamp arm, the other end of the clamp arm 1 is connected with one end of the steering arm, the blocking clamp head 3 is vertically arranged, the upper end of the blocking clamp head is connected with the other end of the steering arm, and the steering arm and the clamp arm 1 form a C shape, so that the blocking clamp head 3 extends to one side of the handle;
the adjusting structure is arranged on the steering arm and used for adjusting the height and the horizontal position of the blocking tong head 3.
The position of the blocking forceps head 3 is changed through the steering arm, the blocking forceps head extends to one side of the handle, and a C-shaped space is formed between the forceps arm and the steering arm.
Specifically, the steering arm comprises a horizontal arm 4 and a vertical arm 5 which are connected end to end; the upper end of the vertical arm is connected with the end part of the forceps arm, the upper end of the vertical arm is connected with one end of the horizontal arm, the other end of the horizontal arm 4 extends to one side of the handle, and the upper end of the blocking forceps head 3 is connected with the other end of the horizontal arm 4; the clamp arm 1, the vertical arm and the horizontal arm form a C-shaped space with an opening positioned at the handle side, and the space forms an avoidance area, and when the aorta is blocked, part of the chest wall is positioned in the avoidance area.
The clamp arm 1, the vertical arm and the horizontal arm are positioned on the same plane, and the included angle between the horizontal arm 4 and the vertical arm 5 is 90-120 degrees.
The horizontal arm and the vertical arm are respectively provided with an adjusting mechanism which is used for adjusting the length of the horizontal arm and the height of the vertical arm, so that the position of the blocking tong head 3 can be adjusted, and the blocking tong head can reach different blocking positions.
Since the vertical arm 5 and the horizontal arm 4 have the same structure and are different only in the position state, and the adjustment mechanisms provided on the vertical arm 5 and the horizontal arm 4 are the same, the adjustment mechanism will be described in detail below by taking the vertical arm as an example.
The vertical arms comprise a first vertical arm and a second vertical arm which are coaxial, the upper end of the first vertical arm is connected with the end part of the forceps arm, the first vertical arm is connected with the second vertical arm through an adjusting mechanism, and the lower end of the second vertical arm is connected with the end part of the horizontal arm.
The adjusting mechanism is a gear rack mechanism and comprises a gear 12 and a rack 7.
The lower extreme of first perpendicular arm is provided with rack hole 17, is provided with gear 12 in the rack hole 17, and the gear is installed in the rack hole through the pivot, and the both ends of pivot support on the lateral wall of first perpendicular arm, and rack 7 sets up the upper end at the perpendicular arm of second, and rack 7 can join in marriage to the rack hole in to mesh with gear 12, rotate through the drive pivot and can make first perpendicular arm and the perpendicular arm of second move or back-to-back along the axial relatively, and then realize the length adjustment of perpendicular arm.
Further, a coaxial guide sleeve 15 is arranged at the lower end of the first vertical arm, a guide hole 14 is formed in the center of the guide sleeve 15 and sleeved on the second vertical arm, and when the rack and pinion mechanism moves, the guide sleeve 15 and the second vertical arm slide relatively.
An inwards concave annular area is formed on the second vertical arm, a guide sleeve 15 is sleeved on the second vertical arm corresponding to the annular area, and the diameter of the guide sleeve is the same as that of the second vertical arm.
Because first perpendicular arm and the perpendicular arm of second are only through rack connection, therefore the joint strength of its two is relatively weak, can take place to rock at the in-process that removes moreover, through the perpendicular arm of uide bushing with first perpendicular arm and second, not only can be to the first perpendicular arm and the perpendicular arm of second carry out coaxial spacing, guarantee length adjustment's stability, also improve the joint strength of first perpendicular arm and the perpendicular arm of second simultaneously greatly.
In order to facilitate the installation of the gear, a gear hole 16 is formed in the side wall opposite to the rack hole, the gear extends into the rack hole through the gear hole, and then the gear is connected with the first vertical arm through a rotating shaft.
Because the blocking forceps comprise two forceps bodies which are hinged with each other, in the using process, the lengths of the two forceps bodies must be the same, so that the effectiveness of blocking the aorta can be ensured only in the closing process of the two forceps bodies, and therefore when the length and the height of the blocking forceps head are adjusted, the adjusting mechanisms of the two forceps bodies need to be adjusted synchronously, and the consistency of the two blocking forceps heads is ensured.
The adjusting mechanisms on the two tong bodies are located at the same position, when the two tong bodies are closed, the gears on the two tong bodies are coaxially arranged, the two rotating shafts are also coaxial, the rotating shafts are provided with key holes 13, the key holes of the two rotating shafts are identical, when the position of the blocking tong head is adjusted, the tong bodies are closed, keys matched with the two key holes are inserted into the two key holes, and the two blocking tong heads are synchronously adjusted by rotating the keys.
The key hole is a through hole or a blind hole, and when the key hole is the blind hole, the two blind holes are oppositely arranged. The two gears are driven to rotate by one key, so that the two gear rack mechanisms synchronously rotate, the length and the height of the two clamp bodies are kept consistent, and the effectiveness of blocking the aorta by the blocking clamp head is ensured.
In another embodiment, the section of the end part of the rotating shaft is rectangular, the area formed between the end part of the rotating shaft and the rotating shaft hole is a key hole, the key holes of the two pliers bodies are arranged oppositely, two ends of the key can be assembled into the key holes, the key is positioned between the two gears, the middle part of the key is provided with a driving block, and the driving block is pushed to drive the two gears to synchronously rotate through the key.
The horizontal arm comprises a first horizontal arm and a second horizontal arm, one end of the first horizontal arm is connected with the lower end of the second vertical arm, the first horizontal arm and the second horizontal arm are connected through a gear rack mechanism, and the other end of the second horizontal arm is connected with the upper end of the blocking tong head.
The working surface of the blocking tong head is a plane, and a horizontal groove is formed in the plane from top to bottom.
Because the blocking forceps only carry out the blood supply to the aorta and block in the operation process, the blocking forceps need not carry out the tractive operation, consequently, through the frictional force of uide bushing and rather than supporting perpendicular arm, and the frictional force between the rack and pinion, can realize the location of length, can also set up anti-skidding line increase frictional force at the fitting surface of uide bushing and perpendicular arm simultaneously, prevent the removal under the non-adjustment state of rack and pinion, can also design the tooth of rack and pinion for the skewed tooth.
Still be provided with locking mechanism 8 between the hand (hold) of two pincers bodies, this locking mechanism includes two racks, and the one end of rack is connected with the lateral wall of handle, and the other end extends to the direction of another handle, and when the closure pincers of blocking, range upon range of setting about two racks to two racks intermeshing realizes the location of two pincers bodies.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.

Claims (10)

1. A blocking forceps for small incisions is characterized by comprising two forceps bodies which are hinged with each other, wherein each forceps body comprises a forceps arm (1), a handle (2), a blocking forceps head (3), a steering arm and an adjusting mechanism;
the handle (2) is connected with one end of the tong arm, the other end of the tong arm (1) is connected with one end of the steering arm, the blocking tong head (3) is vertically arranged, the upper end of the blocking tong head is connected with the other end of the steering arm, and a C-shaped structure is formed between the steering arm and the tong arm (1) so that the blocking tong head (3) extends to one side of the handle;
the adjusting structure is arranged on the steering arm and used for adjusting the height and the horizontal position of the blocking tong head (3).
2. A blocking forceps for small incisions as claimed in claim 1, characterized in that the steering arms comprise an end-to-end connection of a horizontal arm (4) and a vertical arm (5);
the upper end of the vertical arm is connected with the end part of the forceps arm (1), the lower end of the vertical arm is connected with one end of the horizontal arm, and the other end of the horizontal arm (4) extends to one side of the handle and is connected with the upper end of the blocking forceps head (3).
3. A blocking forceps for small incisions as claimed in claim 2, characterized in that the angle between the horizontal arm (4) and the vertical arm (5) is 90 ° to 120 °.
4. A blocking forceps for small incisions as claimed in claim 1 or 2, characterized in that the adjustment mechanism is a rack and pinion mechanism.
5. A blocking forceps for small incisions as claimed in claim 4, characterized in that the horizontal arm and the vertical wall are of identical construction and comprise a first and a second coaxial arm, the first arm being connected to the second arm by means of a rack-and-pinion mechanism.
6. A blocking forceps for small incisions as claimed in claim 5, characterized in that the first arm is provided with a toothed rack hole (11) in which a toothed wheel (12) is arranged, and the end of the second arm is provided with a toothed rack (7) which fits in the toothed rack hole and meshes with the toothed wheel.
7. A blocking forceps for small incisions as claimed in claim 6, characterized in that the end of the first arm is provided with a guide sleeve (15), the guide sleeve (15) fitting over the second arm.
8. A pair of blocking forceps for small incisions as claimed in claim 6, characterized in that the toothed wheel is fixed in a rack hole by means of a rotating shaft, the two ends of which are supported on the side walls of the first arm, the rotating shaft being provided with a keyhole (13) for the insertion of a key for driving the toothed wheel to rotate.
9. A blocking forceps for small incisions as claimed in claim 8, characterized in that the gears on the two forceps bodies are arranged coaxially.
10. A pair of blocking forceps for small incisions as claimed in claim 1, characterized in that a locking mechanism is provided between the two handles for positioning the forceps body in the closed state.
CN202011052770.2A 2020-09-29 2020-09-29 Blocking forceps for small incision Pending CN112043340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011052770.2A CN112043340A (en) 2020-09-29 2020-09-29 Blocking forceps for small incision

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011052770.2A CN112043340A (en) 2020-09-29 2020-09-29 Blocking forceps for small incision

Publications (1)

Publication Number Publication Date
CN112043340A true CN112043340A (en) 2020-12-08

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CN202011052770.2A Pending CN112043340A (en) 2020-09-29 2020-09-29 Blocking forceps for small incision

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6245085B1 (en) * 1998-11-19 2001-06-12 Olympus Winter & Ibe Gmbh Endoscopic nippers
CN207236818U (en) * 2017-01-19 2018-04-17 贵阳中医学院第二附属医院 Mini-invasive incision cardiac operation under direct vision not damaged sustainer blocking clamps
CN209360818U (en) * 2018-07-26 2019-09-10 天津市舒沥通医疗器械科技有限公司 Right angle forceps are used in a kind for the treatment of of urinary system
CN212466086U (en) * 2020-09-29 2021-02-05 中国人民解放军空军军医大学 Blocking forceps for small incision

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6245085B1 (en) * 1998-11-19 2001-06-12 Olympus Winter & Ibe Gmbh Endoscopic nippers
CN207236818U (en) * 2017-01-19 2018-04-17 贵阳中医学院第二附属医院 Mini-invasive incision cardiac operation under direct vision not damaged sustainer blocking clamps
CN209360818U (en) * 2018-07-26 2019-09-10 天津市舒沥通医疗器械科技有限公司 Right angle forceps are used in a kind for the treatment of of urinary system
CN212466086U (en) * 2020-09-29 2021-02-05 中国人民解放军空军军医大学 Blocking forceps for small incision

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