CN117814878A - Carpal tunnel ligament incises sword - Google Patents

Abstract

The invention discloses a carpal tunnel ligament incision knife; relates to the field of carpal tunnel syndrome treatment; the device comprises a handle, a center column and a knife, wherein the upper side of the handle is fixedly connected with the center column, a center groove is formed in the middle of the center column, the knife is fixedly connected to the center groove at the upper side of the center column, and the knife edge of the knife is upward; the center groove structure formed by the center pillar is attached to the ligament, so that the round blunt end and the round corner edge at the upper end of the center pillar with the center groove are separated from nerves around the ligament, the ligament is cut under the action of the knife, the space of the center groove after the ligament is cut holds the ligament after the ligament is cut along with the propelling action, the ligament is prevented from extruding the nerves around, and the iatrogenic injury of damage to the nerve caused by the lotus root during the operation is avoided.

Description

Carpal tunnel ligament incision knife

Technical Field

The invention relates to the field of carpal tunnel syndrome treatment, and in particular to a carpal tunnel ligament incision knife.

Background technique

Carpal tunnel syndrome is the most common peripheral nerve entrapment disease and the disease most commonly treated by hand surgeons. It is mainly manifested by pain in the front of the wrist and numbness and weakness in the hand, which is related to the nature of the patient's occupation. When conservative treatment cannot relieve the patient's symptoms, or the thenar muscle atrophies and the sensation disappears, surgical treatment is required, including various incisions, small incision decompression and endoscopic surgery, such as transverse carpal ligament incision carpal tunnel decompression, incision of the skin and subcutaneous tissue, longitudinal incision of the thickened distal deep fascia of the forearm, and cutting the transverse carpal ligament as close to the ulnar side of the transverse carpal ligament at the hook of the hamate bone, and incision distally to the fat around the superficial palmar arch;

In summary, the current hand ligament cutting process has the following technical problems: the median nerve is located superficially under the transverse carpal ligament, and improper operation can easily cause median nerve injury. For this reason, we designed a knife hidden in the fixing device. The knife cuts the transverse carpal ligament without contacting the median nerve, thus avoiding iatrogenic median nerve injury.

Summary of the invention

In view of the above problems existing in the prior art, the present invention provides a carpal tunnel ligament incision knife.

In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

A carpal tunnel ligament cutting knife comprises a handle, a middle column and a knife. The upper side of the handle is fixedly connected to the middle column, a middle groove is opened in the middle of the middle column, and the knife is fixedly connected to the middle column at the upper middle groove position, and the blade of the knife faces upward.

Furthermore, the length of the middle column is 6-8 cm; the length of the handle is consistent with the length of the middle column.

Furthermore, the middle column is cylindrical, the diameter of the middle column is 5mm, the length of the middle groove is 5-6cm, the height of the middle groove is 3mm, the distance between the tool and the upper end of the middle column is 2mm, the upper end of the middle column is provided with a rounded blunt head structure, and the middle column is provided with a rounded edge structure at the edge of the middle groove position.

Furthermore, the blade of the tool is recessed downward.

Furthermore, the tool is C-shaped.

Furthermore, the cutter is U-shaped.

Furthermore, the cutter is V-shaped.

Furthermore, the lower end of the tool extends to the bottom of the middle groove of the middle column.

Furthermore, the handle is fixedly connected with anti-slip grooves.

Furthermore, a gripping handle is fixedly connected to the handle.

Beneficial effects of the present invention:

A carpal tunnel ligament cutting knife has a middle groove structure on the middle column that fits the position of the ligament, so that the round blunt head and the rounded edge on the upper end of the middle column with the middle groove separate the nerves around the ligament. Under the action of the knife, the ligament is cut, and after cutting, the space in the middle groove accommodates the cut ligament with the advancement action, so as to avoid the ligament squeezing the surrounding nerves and avoid iatrogenic damage to the carpal tunnel nerves during the operation.

Of course, any product implementing the present invention does not necessarily need to achieve all of the above-mentioned advantages at the same time.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

FIG1 is a schematic diagram of the overall structure of a carpal tunnel ligament cutting tool according to an embodiment of the present invention;

FIG2 is a schematic diagram of the structural connection between the upper end of the center column and the cutter according to an embodiment of the present invention;

FIG3 is a schematic diagram of a side view of a portion of a center column and a tool according to Embodiment 1 of the present invention;

FIG4 is a schematic diagram of a side view of a portion of a center column and a tool according to Embodiment 2 of the present invention;

FIG5 is a schematic diagram of a side view of a portion of a center column and a tool according to Embodiment 3 of the present invention;

FIG6 is a schematic structural diagram of a portion of a center column and a cutter according to Embodiment 4 of the present invention;

FIG7 is a schematic diagram of a side view of a portion of a center column and a tool according to Embodiment 4 of the present invention;

FIG8 is a schematic structural diagram of a partial side view of a center column and a tool according to Embodiment 5 of the present invention;

FIG9 is a schematic diagram of a side view of a portion of a center column and a tool according to Embodiment 6 of the present invention;

FIG10 is a schematic diagram of the structure of the handle according to Embodiment 7 of the present invention;

FIG. 11 is a schematic diagram of the structure of the handle described in Example 8 of the present invention.

In the accompanying drawings, the components represented by the reference numerals are listed as follows:

1-handle, 101-anti-slip pattern, 102-grip handle, 2-middle column, 201-middle groove, 202-blunt head, 203-rounded edge, 3-knife.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Example 1

As shown in Figure 1-3

The carpal tunnel ligament cutting knife (3) of the present invention comprises a handle (1), a middle column (2) and a cutting tool (3); the middle column (2) is fixedly connected to the upper side of the handle (1); a middle groove (201) is opened in the middle of the middle column (2) to form a space for the ligament to pass through; the cutting tool (3) is fixedly connected to the middle column (2) at the upper middle groove (201); the blade of the cutting tool (3) faces upwards to form a structure for cooperating with the cutting tool;

The length of the middle column (2) is 6-8 cm; the length of the handle (1) is consistent with the length of the middle column (2), so that the handle and the middle column can be held stably and the problem of difficulty in control caused by the handle or the middle column being too long or too short can be avoided;

The middle column (2) is cylindrical, the diameter of the middle column (2) is 5 mm, the length of the middle groove (201) is 5-6 cm, the height of the middle groove (201) is 3 mm, the distance between the tool (3) and the upper end of the middle column (2) is 2 mm, the upper end of the middle column (2) is provided with a round blunt head (202) structure, and the edge of the middle column (2) at the position of the middle groove (201) is provided with a rounded edge (203) structure, and the size is limited to meet the needs of the surgeon and fit the physiological structure;

The blade of the knife (3) is recessed downward to ensure a pushing action during the ligament cutting process;

The cutter (3) is C-shaped and acts on the ligament when advancing;

The structure with a middle groove in the middle column separates the nerves and ligaments, and shields the knife through the space around the ligament without contacting other tissues.

Example 2

As shown in Figure 4

The cutter (3) is U-shaped;

During the advancement process, it cooperates with the ligament to cut the ligament smoothly;

Example 3

As shown in Figure 5

The tool (3) is V-shaped;

During the advancement process, it cooperates with the ligament to cut the ligament smoothly;

Example 4

As shown in Figures 6 and 7

The lower end of the tool (3) extends to the bottom of the middle groove (201) of the middle column (2), and the tool (3) is C-shaped;

During advancement, the ligament is smoothly divided so that it is in the middle groove;

Example 5

As shown in Figure 8

The lower end of the tool (3) extends to the bottom of the middle groove (201) of the middle column (2), and the tool (3) is U-shaped;

During advancement, the ligament is smoothly divided so that it is in the middle groove;

Example 6

As shown in Figure 9

The lower end of the tool (3) extends to the bottom of the middle groove (201) of the middle column (2), and the tool (3) is V-shaped;

During advancement, the ligament is smoothly divided so that it is in the middle groove;

Example 7

As shown in Figure 10

The handle (1) is fixedly connected with an anti-slip pattern (101);

Ensure that the operator holds the device comfortably and the control process is stable.

Example 8

As shown in Figure 11

A grip handle (102) is fixedly connected to the handle (1).

Ensure that the operator holds the device comfortably and the control process is stable.

In summary, the carpal tunnel ligament cutting knife of the present invention fits the position of the ligament through the middle groove structure of the middle column, so that the rounded blunt head and the rounded edge of the upper end of the middle column with the middle groove separate the nerves around the ligament. Under the action of the tool, the ligament is cut, and the space in the middle groove after cutting accommodates the cut ligament with the pushing action, so as to avoid the ligament squeezing the surrounding nerves and avoid iatrogenic damage to the nerves during the operation.

In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims (9)

1. A carpal tunnel ligament incision knife, characterized in that: the novel knife comprises a handle, a center column and a knife, wherein the center column is fixedly connected to the upper side of the handle, a center groove is formed in the middle of the center column, the knife is fixedly connected to the center column at the position of the center groove on the upper side of the center column, and the knife edge of the knife is upward.

2. The carpal tunnel ligament incision as in claim 1, wherein: the length of the middle column is 6-8cm; the length of the handle is consistent with the length of the center pillar; the center pillar is cylindrical, the center pillar diameter is 5mm, center groove length is 5-6cm, center groove height is 3mm, sword is apart from center pillar upper end distance to be 2mm, center pillar upper end is equipped with circle blunt end structure, center pillar sets up the fillet structure at center groove position edge.

3. The carpal tunnel ligament incision as in claim 1, wherein: the blade edge of the knife is recessed toward the lower side.

4. The carpal tunnel ligament incision as in claim 5, wherein: the knife is C-shaped.

5. The carpal tunnel ligament incision as in claim 5, wherein: the knife is U-shaped.

6. The carpal tunnel ligament incision as in claim 5, wherein: the knife is V-shaped.

7. The carpal tunnel ligament incision as in claim 1, wherein: the lower end of the knife extends to the bottom of the middle groove of the middle column.

8. The carpal tunnel ligament incision as in claim 1, wherein: and the handle is fixedly connected with anti-skid patterns.

9. The carpal tunnel ligament incision as in claim 1, wherein: the handle is fixedly connected with a holding handle.