CN203122548U - Scalpel for implantation of percutaneous pedicle screw - Google Patents
Scalpel for implantation of percutaneous pedicle screw Download PDFInfo
- Publication number
- CN203122548U CN203122548U CN 201320130667 CN201320130667U CN203122548U CN 203122548 U CN203122548 U CN 203122548U CN 201320130667 CN201320130667 CN 201320130667 CN 201320130667 U CN201320130667 U CN 201320130667U CN 203122548 U CN203122548 U CN 203122548U
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- knife
- scalpel
- blade
- handle
- blade installation
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Abstract
The utility model relates to a scalpel for implantation of a percutaneous pedicle screw. A strip-shaped scalpel handle is arranged at a holding part of the scalpel, and a central guide through hole extending longitudinally along the scalpel handle and penetrating through the scalpel handle is formed in the scalpel handle; two blade installation parts are mounted at the head part of the scalpel handle side by side, the two blade installation parts are symmetrically mounted with the central guide through hole of the scalpel handle taken as a central line, and strip-shaped bulges used for fixing blades are mounted at the two blade installation parts; a blade positioning groove is formed between each strip-shaped bulge and the scalpel handle; and blade installation clamping grooves are formed in two side surfaces of each strip-shaped bulge and used for fixing two surgical scalpel blades side by side and opposite in blade backs at the two blade installation parts respectively. The scalpel is a special scalpel suitable for implanting the percutaneous pedicle screw into a thoracolumbar spine, the scalpel can cut a soft tissue rapidly and accurately, the trauma is small, the shape of a healed sutured wound is attractive, and the concept of the minimally invasive surgery is met.
Description
Technical field
This utility model relates to medical instruments field, is specifically related to a kind of scalpel of percutaneous cervical arc root screw implantation.
Background technology
Because the superiority with spinal column three post fixed biologically terms of mechanics, way of escape pedicle nail technique for fixing is used widely in spinal surgery.Traditional modus operandi need extensively be peeled off paraspinal muscle, long-time retractor meat tissue, and operation wound is big, and is hemorrhage many, postoperative paraspinal muscle denervation, meat fiber scarring, shortcomings such as long-term low-back pain.For avoiding above-mentioned shortcoming, the percutaneous cervical arc root screw technology is more and more paid attention to, and develops rapidly.
It is hollow pedicle screw technology that the percutaneous cervical arc root screw technology is used more at present clinically.This technology is at first used the puncturing kit percutaneous puncture, percutaneous is inserted the puncture guide pin in the target pedicle of vertebral arch, cut skin, the thoracolumbar fascia of puncture guide pin both sides again, insert service aisle, hollow screw tap tapping, at last that afterbody is thicker hollow pedicle screw screws in the corresponding pedicle of vertebral arch, or without service aisle, directly tapping behind the soft tissue of incision puncture guide pin both sides, screw-in screw, but all need cut skin, the thoracolumbar fascia of puncture guide pin both sides.Implementing to cut in this operation process, present method is after puncture guide pin fixed point, uses the traditional operation cutter, and the guide pin of pressing close to puncture in puncture guide pin both sides is done otch respectively.Adopt the traditional operation cutter to do otch respectively and have some drawbacks: 1, the scalpel guide pin that needs successively to press close to puncture in puncture guide pin both sides is done otch respectively, complex operation, and efficient is low; 2, skin incision length is wayward, influences Wicresoft's effect; 3, scalpel is pressed close to puncture after guide pin does otch in puncture guide pin one side, shifts one's position again, does otch at the puncture guide pin opposite side guide pin of pressing close to puncture, and subcutaneous and deep may be cut inconsistent because manual operation makes puncture guide pin both sides.Therefore, need cut deep tissue repeatedly, make the otch unanimity, be convenient to separate deep tissue, set up passage.Because need to cut deep tissue repeatedly with scalpel, not only cause complex operation again, efficient is low, also can cause soft-tissue trauma big, influences patient's post-operative recovery; 4, the skin incision of puncture guide pin both sides is inconsistent, influences the shape of wound healing behind the suture, causes scar not attractive in appearance.
Summary of the invention
The purpose of this utility model is at the deficiencies in the prior art, a kind of scalpel of percutaneous cervical arc root screw implantation is provided, this scalpel is the special-purpose surgical knife that is applicable to that breast lumbar vertebra percutaneous cervical arc root screw is inserted, this scalpel can cut the soft tissue tissue fast and accurately, wound is little, and shape of wound is attractive in appearance, meets the Minimally Invasive Surgery theory.
The purpose of this utility model is achieved in that a kind of scalpel of percutaneous cervical arc root screw implantation, the grip part of scalpel is the strip handle of a knife, described handle of a knife is provided with along the handle of a knife longitudinal extension and runs through the centre pilot through hole of handle of a knife, the head of described handle of a knife is provided with two blade installation portions side by side, two blade installation portions line centered by the centre pilot through hole of handle of a knife is symmetrical arranged, two blade installation portions are equipped with the strip bulge for fixed blade, be provided with the blade detent between each strip bulge and the handle of a knife, the two sides of each strip bulge are equipped with blade draw-in groove are installed, be used for two knife blades side by side and the knife back in opposite directions be separately fixed at two blade installation portions.
After two blade installation portions are installed knife blade, leave between the knife back of two blades for the gap passed through of puncture guide pin, the diameter of the centre pilot through hole on the spacing in this gap and the handle of a knife is identical.
The diameter of the centre pilot through hole of described handle of a knife is 1.5～1.7mm.
The beneficial effects of the utility model are: because described handle of a knife is provided with along the handle of a knife longitudinal extension and runs through the centre pilot through hole of handle of a knife, described centre pilot through hole just can be inserted in the puncture guide pin, by the puncture guide pin after the fixed point when implementing the cutting soft tissue, can keep cutting part, direction is error free.The head of described handle of a knife is provided with two blade installation portions side by side, two blade installation portions line centered by the centre pilot through hole of handle of a knife is symmetrical arranged, when using this utility model work, the knife back of the knife blade on two blade installation portions is near puncture guide pin both sides, form the scalpel described in the utility model that working edge reaches both sides forwardly, this scalpel can be quick, the skin of the puncture of disposable incision accurately guide pin both sides, soft tissues such as thoracolumbar fascia, easy to operate, fast, and skin incision length and the degree of depth on puncture guide pin both sides are all identical, wound is little, and the shape of wound healing is attractive in appearance behind the suture, meets the Minimally Invasive Surgery theory.Again because two blade installation portions are equipped with the strip bulge for fixed blade, be provided with the blade detent between each strip bulge and the handle of a knife, the two sides of each strip bulge are equipped with blade draw-in groove are installed, be used for two knife blades side by side and the knife back in opposite directions be separately fixed at two blade installation portions.The knife blade of the present utility model detachable knife blade of adopting international standards, when needs use this utility model, just knife blade is installed on the blade installation portion, and the mounting means that adopts strip bulge to cooperate with draw-in groove on the knife blade, easy for installation, quick.After the operation, take off the knife blade on the blade installation portion, namely reusable after handle of a knife is cleaned, sterilizes.Compare with non-dismountable scalpel, the sharpness of blade when having guaranteed operation, the medical worker causes the risk of accidentally injuring even infecting when having avoided cleaning, sterilization simultaneously because of blade sharp on the handle of a knife, made things convenient for and carried, and it is not fragile, not only save the cost of medical apparatus and instruments, also saved patient's medical treatment cost.This utility model can cooperate with the knife blade of a plurality of models, can realize the different width of otch, the degree of depth.
Description of drawings
Fig. 1 is sketch map of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view;
Fig. 3 is that the B-B of Fig. 1 is to cutaway view;
Fig. 4 is this utility model blade scheme of installation;
Fig. 5 is this utility model work sketch map.
In the accompanying drawing, 1 is handle of a knife, guide through hole centered by 2,3 is the first blade installation portion, 4 is the second blade installation portion, and 5 is first strip bulge, and 6 is second strip bulge, 7 is the first blade detent, 8 is the second blade detent, and 9 are blade installation draw-in groove, and 10 is first knife blade, 11 is second knife blade, and 12 are the puncture guide pin.
The specific embodiment
Referring to Fig. 1 to 4, a kind of scalpel of percutaneous cervical arc root screw implantation, the grip part of scalpel is strip handle of a knife 1, the described strip handle of a knife of present embodiment is flat, is convenient to the gripping of handle of a knife.Described handle of a knife 1 is provided with along the handle of a knife longitudinal extension and runs through the centre pilot through hole 2 of handle of a knife, described centre pilot through hole 2 just can be inserted in puncture guide pin 12, by the puncture guide pin after the fixed point when implementing the cutting soft tissue, can keep cutting part, direction is error free.The diameter of the centre pilot through hole 2 of the described handle of a knife 1 of present embodiment is 1.5～1.7mm.Puncture guide pin 12 diameters are 1.4～1.6mm.The head of described handle of a knife 1 is provided with two blade installation portions side by side, and two blade installation portions are all installed knife blade.Preferably, leave the gap between the first blade installation portion 3 and the second blade installation portion 4, and the interval in gap is about 5mm.Two blade installation portions line centered by the centre pilot through hole of handle of a knife is symmetrical arranged, the first blade installation portion 3 is provided be used to first strip bulge 5 of fixing first knife blade, the second blade installation portion 4 is provided be used to second strip bulge 6 of fixing second knife blade, be provided with the first blade detent 7 between first strip bulge 5 and the handle of a knife 1, be used for first knife blade 10 and position.Be provided with the second blade detent 8 between second strip bulge 6 and the handle of a knife 1, be used for second knife blade 11 and position.Each strip bulge two sides be equipped with blade draw-in groove 9 be installed, be used for two knife blades side by side and the knife back in opposite directions be separately fixed at two blade installation portions.After two blade installation portions are installed knife blade, leave between the knife back of two blades for the gap passed through of puncture guide pin, the diameter of the centre pilot through hole on the spacing in this gap and the handle of a knife is identical.
First, second strip bulge 5 of present embodiment, 6 head end face and breech face are semi-cylindrical.The inclined-plane of a left side half end face of described handle of a knife 1 head end for matching with the cutter tail of first knife blade 10, the inclined-plane of the right side half end face of described handle of a knife 1 head end for matching with the cutter tail of second knife blade 11, a left side half end face of described handle of a knife 1 head end and right half end face line centered by the centre pilot through hole 2 of handle of a knife is symmetrical arranged, and a left side half end face of described handle of a knife head end is opposite with the inclined-plane of right half end face.One groove walls of the described first blade detent 7 overlaps with the breech face of first strip bulge, and another groove walls of the described first blade detent 7 overlaps with a left side half end face of head end.One groove walls of the described second blade detent 8 overlaps with the breech face of second strip bulge, and another groove walls of the described second blade detent 8 overlaps with the right side half end face of head end.
When using this utility model work, the knife back of the knife blade on two blade installation portions is near puncture guide pin both sides, form the scalpel described in the utility model that working edge reaches both sides forwardly, soft tissues such as the skin of can be the fast and accurately disposable incision puncture of this scalpel guide pin both sides, thoracolumbar fascia, easy to operate, quick, and skin incision length and the degree of depth on puncture guide pin both sides are all identical, and wound is little, and the shape of wound healing is attractive in appearance behind the suture, meets the Minimally Invasive Surgery theory.And, the knife blade of the present utility model detachable knife blade of adopting international standards when needs use this utility model, just is installed in knife blade on the blade installation portion, and the mounting means that adopts strip bulge to cooperate with draw-in groove on the knife blade, easy for installation, quick.After the operation, take off the knife blade on the blade installation portion, namely reusable after handle of a knife is cleaned, sterilizes.Compare with non-dismountable scalpel, the sharpness of blade when having guaranteed operation, the medical worker causes the risk of accidentally injuring even infecting when having avoided cleaning, sterilization simultaneously because of blade sharp on the handle of a knife, made things convenient for and carried, and it is not fragile, not only save the cost of medical apparatus and instruments, also saved patient's medical treatment cost.This utility model can cooperate with the knife blade of a plurality of models, can realize the different width of otch, the degree of depth.
The shape of this utility model blade installation portion, specification are identical with the 3# handle of a knife of international standard, be used for being connected with the knife blade of difformity such as supporting 10#, 11#, 16# and width, and need not the standard of formulating separately when producing, described knife blade is the detachable knife blade of adopting international standards, easily buying.
The 10# blade that knife blade of the present utility model is adopted international standards, the blade length and width of its blade are 25mm * 7mm, can make the otch of wide 15.5～15.7mm, increase or reduce the also knife blade of replaceable other models of width as need, to satisfy the operation needs.
Referring to Fig. 5, work process of the present utility model is: during operation two knife blades 10,11 are connected with two blade installation portions 3 of the present utility model, 4, form the scalpel described in the utility model that blade reaches both sides forwardly.After puncture guide pin 12 is inserted in the pedicle of vertebral arch, namely the gap between two knife blades 10,11 the knife back, the centre pilot through hole 2 of handle of a knife are inserted in puncture guide pin 12 with hollow space of the present utility model, this moment, two knife blades 10,11 the knife back be near puncture guide pin 12 both sides, and this utility model can be along soft tissues such as the skin of the disposable incision puncture of puncture guide pin 12 directions guide pin both sides, thoracolumbar fascias then.Can rotate as required also that handle of a knife 1 is done at the patient back laterally or vertically, even the diagonal otch.
Claims (3)
1. the scalpel of a percutaneous cervical arc root screw implantation, the grip part of scalpel is the strip handle of a knife, it is characterized in that: described handle of a knife is provided with along the handle of a knife longitudinal extension and runs through the centre pilot through hole of handle of a knife, the head of described handle of a knife is provided with two blade installation portions side by side, two blade installation portions line centered by the centre pilot through hole of handle of a knife is symmetrical arranged, two blade installation portions are equipped with the strip bulge for fixed blade, be provided with the blade detent between each strip bulge and the handle of a knife, the two sides of each strip bulge are equipped with blade draw-in groove are installed, be used for two knife blades side by side and the knife back in opposite directions be separately fixed at two blade installation portions.
2. the scalpel of percutaneous cervical arc root screw implantation according to claim 1, it is characterized in that: after two blade installation portions are installed knife blade, leave between the knife back of two blades for the gap passed through of puncture guide pin, the diameter of the centre pilot through hole on the spacing in this gap and the handle of a knife is identical.
3. the scalpel of percutaneous cervical arc root screw implantation according to claim 1 and 2, it is characterized in that: the diameter of the centre pilot through hole of described handle of a knife is 1.5～1.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320130667 CN203122548U (en) | 2013-03-21 | 2013-03-21 | Scalpel for implantation of percutaneous pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320130667 CN203122548U (en) | 2013-03-21 | 2013-03-21 | Scalpel for implantation of percutaneous pedicle screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203122548U true CN203122548U (en) | 2013-08-14 |
Family
ID=48930585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320130667 Expired - Fee Related CN203122548U (en) | 2013-03-21 | 2013-03-21 | Scalpel for implantation of percutaneous pedicle screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203122548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109498157A (en) * | 2018-12-06 | 2019-03-22 | 北京天智航医疗科技股份有限公司 | Knife handle component and sleeve |
-
2013
- 2013-03-21 CN CN 201320130667 patent/CN203122548U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109498157A (en) * | 2018-12-06 | 2019-03-22 | 北京天智航医疗科技股份有限公司 | Knife handle component and sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20180321 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |