CN213850859U - Surgical instrument for lumbar vertebra channel - Google Patents
Surgical instrument for lumbar vertebra channel Download PDFInfo
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- CN213850859U CN213850859U CN202022131771.8U CN202022131771U CN213850859U CN 213850859 U CN213850859 U CN 213850859U CN 202022131771 U CN202022131771 U CN 202022131771U CN 213850859 U CN213850859 U CN 213850859U
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Abstract
The utility model relates to a surgical instrument for lumbar vertebra channel, comprising a needle holder and forceps, wherein the needle holder comprises two holding arms which are hinged through a hinge shaft, the middle part of the holding arm is provided with a first bending part which is formed by bending downwards, the holding arm is divided into a first part at the front end and a second part at the rear end by the first bending part, and a step structure which enables the first part and the second part of the holding arm to be arranged approximately parallel and the second part to be lower than the first part is formed; the forceps comprise two forceps arms, a second bending part formed by bending downwards is arranged in the middle of each forceps arm, each forceps arm is divided into a third part located at the front end and a fourth part located at the rear end by the second bending part, a step structure which enables the third part and the fourth part of each forceps arm to be arranged in a substantially parallel mode and enables the fourth part to be lower than the third part is formed, and the problem that an operation view field is blocked by an instrument is solved.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a surgical instrument for a lumbar vertebra channel.
Background
The channel technology is a minimally invasive technology which is completed by an expandable pipeline and utilizing special matched instruments, and at present, a plurality of spinal minimally invasive technologies are used for the channel technology, such as the lumbar vertebra posterior channel technology, the lumbar vertebra anterior channel technology, the cervical vertebra posterior channel technology and the like.
However, the surgical instruments currently used in the lumbar spine have at least the following disadvantages:
1. because the operation space of the channel technology is smaller than that of the conventional open operation, the conventional instrument can block the operation visual field when entering the channel, so that the operation under the endoscope is not accurate enough and the normal tissue structure is easily damaged;
2. because the path of the lumbar channel is long, the length of part of the conventional instruments is not enough to enter the deep layer of the channel for operation, while the length of part of the conventional instruments is enough, the rear structure of the instrument is large due to the small entrance of the channel, and the operability of the instrument is further influenced;
therefore, the problems of blocking the surgical field of view and matching with the channel length of the instrument are also needed to be solved for the existing surgical instrument applied to the lumbar vertebra channel.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a surgical instrument for lumbar vertebra channel, solve the problem that the instrument blocks the operation field of vision.
The specific scheme is as follows:
a surgical instrument for a lumbar vertebra channel, which comprises a needle holder and forceps,
the needle holder comprises two holding arms which are hinged through a hinge shaft, the front end of each holding arm is provided with a forceps mouth, the tail end of each holding arm is provided with a handle, the middle part of each holding arm is provided with a first bending part which is formed by bending downwards, the holding arm is divided into a first part positioned at the front end and a second part positioned at the rear end by the first bending part, and a step structure which enables the first part and the second part of the holding arm to be arranged in parallel and the second part to be lower than the first part is formed;
the tweezers comprise two tweezers arms, the rear ends of the two tweezers arms are close to each other and connected to form a connecting end, the front ends of the two tweezers arms are oppositely arranged to form a clamping part for clamping an instrument, the middle part of each tweezers arm is provided with a second bending part formed by bending downwards, each tweezers arm is divided into a third part located at the front end and a fourth part located at the rear end by the second bending part, and a step structure which enables the third part and the fourth part of each tweezers arm to be arranged in parallel and enables the fourth part to be lower than the third part is formed
Further, the second parts of the two holding arms of the needle holder are arranged in parallel.
Further, the free end of the jaw has a curvature that curves away from the second portion of the holding arm.
Furthermore, the rear ends of the second parts of the two holding arms of the needle holder are respectively provided with a fastening rack extending oppositely, the opposite surfaces of the two fastening racks are provided with clamping teeth which are matched with each other, and when the clamping teeth on the two fastening racks are mutually clamped, the two holding arms keep a locking state.
Furthermore, the opposite inner wall surfaces of the clamping parts of the two forceps arms of the forceps are provided with clamping teeth which are matched with each other.
Further, the clamping part is oval.
Furthermore, the middle parts of the two forceps arms of the forceps are provided with radians protruding away from each other.
Furthermore, the middle parts of the two forceps arms of the forceps are respectively provided with one of a positioning column and a positioning hole, and the positioning column can extend into the positioning hole during clamping.
Compared with the prior art, the surgical instrument provided by the utility model has the following advantages: the utility model provides a middle part of surgical instruments's needle holder and tweezers all has the kink of down buckling and formation to make the first half and the latter half of needle holder tweezers form roughly parallel arrangement, and the latter half is less than the stair structure of first half, so that make the handle of rear end and the clamping part of front end not on a horizontal plane, when the operation, avoid the handle position to disturb the operation field of vision above the passageway, guaranteed the accuracy of operation under the mirror in the art.
Drawings
Fig. 1 shows a perspective view of a needle holder.
Fig. 2 shows a side view of the needle holder.
Fig. 3 shows a top view of the needle holder.
Fig. 4 shows a schematic view of a needle holder fastening rack.
Figure 5 shows a perspective view of the forceps.
Figure 6 shows a side view of the forceps.
Figure 7 shows a top view of the forceps.
Detailed Description
To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The present invention will now be further described with reference to the accompanying drawings and detailed description.
Example 1
As shown in fig. 1 and 2, the present embodiment provides a surgical instrument for a lumbar spinal channel, which includes a needle holder and forceps.
The needle holder comprises two holding arms 11 which are hinged through a hinge shaft 12, the front end of each holding arm 11 is provided with a forceps mouth 13, and the tail end of each holding arm 11 is provided with a handle 14.
The middle portion of the holding arm 11 has a first bending portion 110 formed by bending downward, the holding arm 11 is divided into a first portion 111 located at the front end and a second portion 112 located at the rear end by the first bending portion 110, and a step structure is formed such that the first portion 111 and the second portion 112 of the holding arm 11 are arranged substantially in parallel, and the second portion 112 is lower than the first portion 111.
Because the first part 111 and the second part 112 of the holding arm 11 form a height difference, the handle 14 and the forceps mouth 13 are not on the same horizontal plane, the handle part is prevented from interfering with the operation visual field above the channel during operation, and the accuracy of the operation under the endoscope during operation is ensured.
In the present embodiment, referring to fig. 1 and fig. 3, the second portions 112 of the two holding arms 11 are arranged in parallel, so that the volume of the access channel can be reduced, the blocking of the operation view in the operation can be avoided, and the operation range of the needle holder can be enlarged, that is, the opening width of the handle is larger, so as to drive the opening width of the forceps mouth at the front end to be larger, and at the same time, the length of the holding arm 11 can be properly extended under the condition of the same opening degree, so that the needle holder can be operated in the deep layer of the access channel.
In this embodiment, referring to fig. 2, the free end of the pincer-mouth 13 has a curvature that is bent away from the second portion 112 of the holding arm 11, so that the pincer-mouth 13 can be better seen under the mirror during the operation, and unnecessary damage due to misoperation can be avoided.
Referring to fig. 1, 3 and 4, in this embodiment, the rear ends of the second portions 112 of the two holding arms 11 are respectively provided with a fastening rack 113 extending oppositely, the opposite surfaces of the two fastening racks 113 are provided with latch 1130 arranged in a mutually matching manner, when the latch 1130 on the two fastening racks 113 are mutually engaged, the two holding arms 11 will not automatically release, and the locking state is maintained, so as to avoid the suture needle falling caused by the accidental release of the needle holder during the operation.
As shown in figures 5-7, the forceps comprise two forceps arms 21, the back ends of the two forceps arms 21 are close to each other and connected to form a connecting end, and the front ends of the two forceps arms 21 are oppositely arranged to form a holding part 22 for holding instruments.
The middle of the forceps arm 21 is provided with a second bent part 210 bent downwards, the forceps arm 21 is divided into a third part 211 at the front end and a fourth part 212 at the rear end by the second bent part 210, and a step structure is formed so that the third part 211 and the fourth part 212 of the forceps arm 21 are arranged substantially in parallel and the fourth part 212 is lower than the third part 211.
Because the third part 211 and the fourth part 212 of the forceps arm 21 form a height difference, the clamping parts 22 at the rear end and the front end of the forceps arm 21 are not on the same horizontal plane, the rear end of the forceps arm 21 is prevented from being positioned above a channel to interfere with the operation field during operation, and the accuracy of under-microscope operation during operation is ensured.
In the embodiment, the opposite inner wall surfaces of the holding parts 22 of the two forceps arms 21 are provided with holding teeth 220 which are matched with each other, so as to improve the holding capability of the forceps and avoid the falling of the instruments in operation.
In the present embodiment, the clamping portion 22 is oval-shaped, and the clamping portion 22 is round and blunt, which is beneficial to prevent the normal tissue structure from being accidentally injured during the operation.
In the embodiment, the middle parts of the two forceps arms 21 are provided with the radian protruding away from each other, and the radian of the middle parts of the forceps arms 21 is beneficial to improving the holding force of the object to be held.
In the embodiment, one of the positioning column 213 and the positioning hole 214 is respectively disposed on the middle portions of the two forceps arms 21, wherein the middle portion of one of the forceps arms 21 has the positioning column 213 extending toward the other forceps arm 21, the other forceps arm 21 has the positioning hole 214 opposite to and matching with the positioning column 213, and during the clamping process, the positioning column 213 can extend into the positioning hole 214 to prevent the forceps arm 21 from swinging and shifting when holding an object strongly.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A surgical instrument for a lumbar spine tunnel, comprising: comprises a needle holder and a pair of tweezers,
the needle holder comprises two holding arms which are hinged through a hinge shaft, the front end of each holding arm is provided with a forceps mouth, the tail end of each holding arm is provided with a handle, the middle part of each holding arm is provided with a first bending part which is formed by bending downwards, the holding arm is divided into a first part positioned at the front end and a second part positioned at the rear end by the first bending part, and a step structure which enables the first part and the second part of the holding arm to be arranged in parallel and the second part to be lower than the first part is formed;
the tweezers comprise two tweezers arms, the rear ends of the two tweezers arms are close to each other and connected to form a connecting end, the front ends of the two tweezers arms are oppositely arranged to form a clamping part for clamping an instrument, the middle part of each tweezers arm is provided with a second bending part formed by bending downwards, the tweezers arms are divided into a third part located at the front end and a fourth part located at the rear end by the second bending part, and a step structure which enables the third part and the fourth part of each tweezers arm to be arranged in a substantially parallel mode and enables the fourth part to be lower than the third part is formed.
2. A surgical instrument as recited in claim 1, wherein: the second parts of the two holding arms of the needle holder are arranged in parallel.
3. A surgical instrument according to claim 1 or 2, wherein: the free end of the jaw has a curvature that curves away from the second portion of the arm.
4. A surgical instrument as recited in claim 1, wherein: the rear ends of the second parts of the two holding arms of the needle holder are respectively provided with a fastening rack which extends oppositely, the opposite surfaces of the two fastening racks are provided with clamping teeth which are matched with each other, and when the clamping teeth on the two fastening racks are mutually clamped, the two holding arms keep a locking state.
5. A surgical instrument as recited in claim 1, wherein: the opposite inner wall surfaces of the clamping parts of the two forceps arms of the forceps are provided with clamping teeth which are matched with each other.
6. A surgical instrument as recited in claim 1, wherein: the clamping part is oval.
7. A surgical instrument as recited in claim 1, wherein: the middle parts of the two forceps arms of the forceps are provided with radians protruding towards the opposite side.
8. A surgical instrument as recited in claim 1, wherein: one of a positioning column and a positioning hole is respectively arranged on the middle parts of the two forceps arms of the forceps, and the positioning column can extend into the positioning hole during clamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022131771.8U CN213850859U (en) | 2020-09-25 | 2020-09-25 | Surgical instrument for lumbar vertebra channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022131771.8U CN213850859U (en) | 2020-09-25 | 2020-09-25 | Surgical instrument for lumbar vertebra channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213850859U true CN213850859U (en) | 2021-08-03 |
Family
ID=77049848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022131771.8U Active CN213850859U (en) | 2020-09-25 | 2020-09-25 | Surgical instrument for lumbar vertebra channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213850859U (en) |
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2020
- 2020-09-25 CN CN202022131771.8U patent/CN213850859U/en active Active
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