CN220124770U - Tendon sheath minimally invasive surgical knife - Google Patents
Tendon sheath minimally invasive surgical knife Download PDFInfo
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- CN220124770U CN220124770U CN202320237747.3U CN202320237747U CN220124770U CN 220124770 U CN220124770 U CN 220124770U CN 202320237747 U CN202320237747 U CN 202320237747U CN 220124770 U CN220124770 U CN 220124770U
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- tendon sheath
- cutting
- cutting edge
- minimally invasive
- invasive surgical
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- 210000002435 tendon Anatomy 0.000 title claims abstract description 124
- 238000005520 cutting process Methods 0.000 claims abstract description 97
- 230000001154 acute effect Effects 0.000 claims description 5
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 4
- 206010061218 Inflammation Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000004054 inflammatory process Effects 0.000 description 2
- 238000002324 minimally invasive surgery Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
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Abstract
The utility model discloses a tendon sheath minimally invasive surgical knife which comprises a knife bar and a knife edge. The cutter bar is square in cross section, and the cutter bar is provided with a first wall surface and a second wall surface which are oppositely arranged along the thickness direction, and the cutter bar comprises a handheld end and a cutting end which are oppositely arranged. The cutting edge is connected to the first wall surface and is arranged adjacent to the cutting end, the cutting edge comprises a first cutting edge, and the first cutting edge is arranged away from the handheld end. The thickness direction of the cutting edge is perpendicular to the thickness direction of the cutter bar, and the thickness direction of the cutting edge is perpendicular to the length direction of the cutter bar. In this scheme, the structure of scalpel makes the cutting process of tendon sheath go on in skin below, only need on skin scratch a short slit can, short slit's length slightly be greater than the width of the cutter arbor of scalpel can, its cutting length that is less than the tendon sheath far away, has reduced skin cutting surface for the recovery cycle after the operation.
Description
Technical Field
The utility model relates to the technical field of surgical cutters, in particular to a tendon sheath minimally invasive surgical knife.
Background
The tendon sheath wraps the tendon, specifically, an inner hole is formed in the middle of the tendon sheath, and the tendon is arranged in the inner hole of the tendon sheath in a penetrating mode. When the finger is bent or stretched, the tendon slides within the internal hole within the tendon sheath. However, when the finger moves for a long time, the tendon frequently slides in the tendon sheath, and the lubrication substance between the tendon and the tendon sheath eventually does not realize effective lubrication, so that the tendon and the tendon sheath directly rub for a long time, thereby causing inflammation of the tendon and/or the tendon sheath. When the tendon and/or tendon sheath are inflamed, the gap between the tendon and the tendon sheath is narrowed at the inflamed position, which eventually results in that the tendon and the tendon sheath are difficult to slide relative to each other at the inflamed position, so that the finger cannot voluntarily relax and contract, and the tendon sheath at the inflamed position needs to be incised by using a surgical mode, so that the tendon and the tendon sheath can slide relative to each other.
In the existing tendon sheath minimally invasive surgery, tendon sheath needs to be cut. The tendon sheath is located under the skin and a conventional knife cuts directly into the superficial layers of the skin, along with the skin and tendon sheath. The tendon sheath needs to cut a long incision, the skin can cut a long incision, the cutting surface of the skin is large, and the operation recovery period is long.
Disclosure of Invention
The utility model mainly aims to provide a tendon sheath minimally invasive surgical knife which can reduce a skin cutting surface.
In order to achieve the above object, the present utility model provides a tendon sheath minimally invasive surgical knife, comprising:
the cutter bar is square in cross section, and is provided with a first wall surface and a second wall surface which are oppositely arranged in the thickness direction, and the cutter bar comprises a hand-held end and a cutting end which are oppositely arranged;
a blade connected to the first wall and disposed adjacent the cutting end, the blade comprising a first blade disposed away from the hand-held end;
the thickness direction of the cutting edge is perpendicular to the thickness direction of the cutter bar, and the thickness direction of the cutting edge is perpendicular to the length direction of the cutter bar.
In some embodiments, the blade further comprises a second edge opposite the first edge, the second edge facing away from the cutting end.
In some embodiments, one end of the first cutting edge and one end of the second cutting edge extend to the first wall surface, and one end of the first cutting edge away from the first wall surface is connected with one end of the second cutting edge away from the first wall surface.
In some embodiments, the interface of the first edge and the second edge is at an acute angle.
In some embodiments, the first edge is arcuate and the first edge is convex toward the cutting end.
In some embodiments, the second edge is arcuate and the second edge is concave in a direction away from the hand-held end.
In some embodiments, the first wall surface is further provided with a scale mark, the scale mark is arranged between the cutting edge and the handheld end, and the scale mark is used for marking the cutting length of the tendon sheath.
In some embodiments, the length of the scale markings ranges between three and five centimeters.
In some embodiments, the tendon sheath minimally invasive surgical knife further comprises an indicator piece connected to the first wall surface, the indicator piece being disposed adjacent the hand-held end, a thickness direction of the indicator piece being parallel to a thickness direction of the blade edge.
In some embodiments, the blade is disposed in a middle portion of the first wall in a width direction of the first wall.
Compared with the prior art, the utility model has the beneficial effects that:
in the technical scheme of the utility model, the tendon sheath minimally invasive surgical knife comprises a knife bar and a knife edge. The cutter bar is square in cross section, and the cutter bar is provided with a first wall surface and a second wall surface which are oppositely arranged along the thickness direction, and the cutter bar comprises a handheld end and a cutting end which are oppositely arranged. The cutting edge is connected to the first wall surface and is arranged adjacent to the cutting end, the cutting edge comprises a first cutting edge, and the first cutting edge is arranged away from the handheld end. The thickness direction of the cutting edge is perpendicular to the thickness direction of the cutter bar, and the thickness direction of the cutting edge is perpendicular to the length direction of the cutter bar. In this scheme, because the thickness direction of cutting edge is perpendicular with the thickness direction of cutter arbor, and the thickness direction of cutting edge is perpendicular with the length direction of cutter arbor for when utilizing this cutter to carry out the tendon sheath cutting, can cut a short seam on skin earlier, and the length direction of short seam is perpendicular with the cutting direction of tendon sheath (current two are parallel). After the short suture cutting is completed, the skin is lifted, the cutting end of the scalpel penetrates into the lower portion of the skin (particularly between the skin and the tendon sheath), then the blade is inserted into the tendon sheath, and then the blade is positioned in the tendon sheath, and the cutter bar is positioned between the skin and the tendon sheath (the cutter bar of the traditional scalpel is cylindrical and too large to be placed between the skin and the tendon sheath, or the thickness direction of the blade is parallel to the thickness direction of the cutter bar, and the cutter bar cannot be placed between the skin and the tendon sheath). Because the first blade of cutting edge deviates from the handheld end, so operating personnel can promote the scalpel to the depths for first blade moves along the length direction of tool post, and then can cut the tendon sheath along the length direction of scalpel. In this scheme, the structure of scalpel makes the cutting process of tendon sheath go on in skin below, only need on skin scratch a short slit can, short slit's length slightly be greater than the width of the cutter arbor of scalpel can, its cutting length that is less than the tendon sheath far away, has reduced skin cutting surface for the recovery cycle after the operation.
In addition, in the utility model, the cutting edge is not positioned at the end part of the cutter bar, so that the part between the end part of the cutting end of the cutter bar and the cutting edge can be abutted against the tendon sheath, the cutter bar is effectively prevented from tilting in the process of pushing the scalpel, and the accuracy of the cutting depth can be effectively ensured.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of a tendon sheath minimally invasive surgical knife according to an embodiment of the present utility model;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;
FIG. 3 is a schematic side view of a tendon sheath minimally invasive surgical knife according to an embodiment of the present utility model;
fig. 4 is a schematic top view of a tendon sheath minimally invasive surgical knife according to an embodiment of the present utility model.
Reference numerals illustrate:
10-a scalpel;
100-knife bar; 110-a first wall; 120-a handheld end; 130-cutting end;
200-knife edges; 210-a first cutting edge; 220-a second edge;
300-indicator sheet;
400-scale mark.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is included in the embodiment of the present utility model, the directional indication is merely used to explain a relative positional relationship, a movement condition, and the like between the components in a specific posture, and if the specific posture is changed, the directional indication is correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or", "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B ", including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The tendon sheath wraps the tendon, specifically, an inner hole is formed in the middle of the tendon sheath, and the tendon is arranged in the inner hole of the tendon sheath in a penetrating mode. When the finger is bent or stretched, the tendon slides within the internal hole within the tendon sheath. However, when the finger moves for a long time, the tendon frequently slides in the tendon sheath, and the lubrication substance between the tendon and the tendon sheath eventually does not realize effective lubrication, so that the tendon and the tendon sheath directly rub for a long time, thereby causing inflammation of the tendon and/or the tendon sheath. When the tendon and/or tendon sheath are inflamed, the gap between the tendon and the tendon sheath is narrowed at the inflamed position, which eventually results in that the tendon and the tendon sheath are difficult to slide relative to each other at the inflamed position, so that the finger cannot voluntarily relax and contract, and the tendon sheath at the inflamed position needs to be incised by using a surgical mode, so that the tendon and the tendon sheath can slide relative to each other.
In the existing tendon sheath minimally invasive surgery, tendon sheath needs to be cut. The tendon sheath is located under the skin and a conventional knife cuts directly into the superficial layers of the skin, along with the skin and tendon sheath. The tendon sheath needs to cut a long incision, the skin can cut a long incision, the cutting surface of the skin is large, and the operation recovery period is long.
In view of this, and referring to fig. 1-4, the present utility model provides a tendon sheath minimally invasive surgical knife 10, the tendon sheath minimally invasive surgical knife 10 comprising a knife bar 100 and a knife edge 200. The cutter bar 100 has a square cross section, the cutter bar 100 has a first wall 110 and a second wall which are oppositely arranged along the thickness direction, and the cutter bar 100 comprises a hand-held end 120 and a cutting end 130 which are oppositely arranged. The blade 200 is attached to the first wall 110 and is disposed adjacent the cutting end 130, the blade 200 including a first blade 210, the first blade 210 disposed away from the handheld end 120. The thickness direction of the blade 200 is perpendicular to the thickness direction of the cutter bar 100, and the thickness direction of the blade 200 is perpendicular to the length direction of the cutter bar 100. In some embodiments, the blade 200 may be provided at a middle portion of the first wall 110 in a width direction of the first wall 110. In this embodiment, since the thickness direction of the blade 200 is perpendicular to the thickness direction of the cutter bar 100, and the thickness direction of the blade 200 is perpendicular to the length direction of the cutter bar 100, when the cutter is used to cut the tendon sheath, a short slit can be cut on the skin, and the length direction of the short slit is perpendicular to the cutting direction of the tendon sheath (in the prior art, parallel to the cutting direction). After the short suture cutting is completed, the skin is lifted, the cutting end 130 of the scalpel 10 is inserted under the skin (specifically, between the skin and the tendon sheath), and then the blade 200 is inserted into the tendon sheath, at this time, the blade 200 is positioned in the tendon sheath, and the blade holder 100 is positioned between the skin and the tendon sheath (the blade holder 100 of the conventional scalpel 10 is either cylindrical and has a too large volume to be inserted between the skin and the tendon sheath, or the blade 200 is connected to the side of the blade holder 100, and the thickness direction of the blade 200 is parallel to the thickness direction of the blade holder 100, and the blade holder 100 cannot be inserted between the skin and the tendon sheath). Since the first edge 210 of the blade 200 faces away from the hand-held end 120, an operator can push the scalpel 10 deep, so that the first edge 210 moves along the length direction of the scalpel handle 100, and then can cut tendon sheaths along the length direction of the scalpel 10 (when the scalpel handle 100 is slowly inserted deep into the skin). In this scheme, the structure of the scalpel 10 makes the tendon sheath cutting process be performed under the skin, only a short slit needs to be cut on the skin, the length of the short slit is slightly larger than the width of the cutter bar 100 of the scalpel 10, and the short slit is far smaller than the tendon sheath cutting length, so that the skin cutting surface is reduced, and the postoperative recovery period is shortened.
In addition, in the utility model, the blade 200 is not positioned at the end of the cutter bar 100, so that the part between the end of the cutting end 130 of the cutter bar 100 and the blade 200 can be abutted against the tendon sheath, the cutter bar 100 is effectively prevented from tilting in the process of pushing the scalpel 10, and the accuracy of the cutting depth can be effectively ensured.
In some embodiments, the blade 200 further includes a second edge 220 opposite the first edge 210, the second edge 220 facing away from the cutting end 130. In this scheme, the scalpel 10 can perform cutting in the forward pushing process and cutting in the backward pulling process.
In some embodiments, one end of the first cutting edge 210 and one end of the second cutting edge 220 both extend to the first wall 110, and one end of the first cutting edge 210 facing away from the first wall 110 is connected to one end of the second cutting edge 220 facing away from the first wall 110. In this scheme, two blade direct connection for the juncture of two blade is sharp-pointed, does benefit to blade 200 perpendicular insertion in the tenosynovial sheath. In other embodiments, the first edge 210 and the second edge 220 may not be connected, and the first edge 210 or the second edge 220 may be fully utilized to cut into the tendon sheath in an oblique direction.
In some embodiments, the interface of the first edge 210 and the second edge 220 is at an acute angle. In this scheme, the resistance of the blade 200 inserted into the tendon sheath can be reduced, and the convenience of the operation is improved. Of course, in other embodiments, the boundary between the first edge 210 and the second edge 220 may be an obtuse angle.
In some embodiments, the first edge 210 is arcuate and the first edge 210 is convex toward the cutting end 130. In this arrangement, the operator can easily push forward the scalpel 10. And the acute angle arrangement of the tool nose can be further facilitated.
In some embodiments, the second edge 220 is arcuate and the second edge 220 is concave in a direction away from the handheld end 120. In this arrangement, the operator can conveniently pull back on the scalpel 10. And the acute angle arrangement of the tool nose can be further facilitated.
The present inventors have found that, in the prior art, the incision of the tendon sheath is exposed, so that the operator can easily observe the cut length of the tendon sheath by naked eyes. In the scheme of the utility model, the tendon sheath is cut under the whole skin, and the incision of the tendon sheath is not exposed, so that an operator can only perceive the cutting length of the tendon sheath by intuition or experience, and the requirement on the experience of the operation is higher. In view of this, referring to fig. 4, in some embodiments, the first wall 110 is further provided with a scale mark 400, the scale mark 400 being provided between the blade 200 and the handheld end 120, the scale mark 400 being used to mark the cut length of the tendon sheath. In this solution, during the process of pushing the scalpel 10 forward, the operator can indirectly obtain the length of the tendon sheath incision through the scale mark 400 extending into the skin, and it should be noted that, in order to obtain the tendon sheath incision length more accurately, in some embodiments, the scale value on the scale mark 400 represents the length between the current scale position and the connection point of the first cutting edge 210 and the first wall 110.
In some embodiments, the length of the scale markings 400 range between three centimeters and five centimeters. In this scheme, can make the scale length basically cover most tendon sheath cutting length, also can not increase processing cost because of the customer overlength simultaneously.
The inventors have also found that in the prior art, the angle of the cut and the direction of the slit during tendon sheath cutting can be adjusted in real time by observation by the human eye. In the utility model, the joint cutting of the tendon sheath cannot be observed, so that the cutting direction and the cutting angle cannot be adjusted in real time. In view of this, referring to fig. 1, in some embodiments, the tendon sheath minimally invasive surgical knife 10 further includes an indicator piece 300, the indicator piece 300 being connected to the first wall 110, and the indicator piece 300 being disposed adjacent to the hand-held end 120, the thickness direction of the indicator piece 300 being parallel to the thickness direction of the blade 200. In operation, since the thickness direction of the indicating sheet 300 is parallel to the thickness direction of the blade 200, the deflection angle of the blade 200 can be adjusted by the deflection angle of the indicating sheet 300, so that the cutting angle of the blade 200 can be adjusted in real time.
The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).
Claims (10)
1. A tendon sheath minimally invasive surgical knife, comprising:
the cutter bar is square in cross section, and is provided with a first wall surface and a second wall surface which are oppositely arranged in the thickness direction, and the cutter bar comprises a hand-held end and a cutting end which are oppositely arranged;
a blade connected to the first wall and disposed adjacent the cutting end, the blade comprising a first blade disposed away from the hand-held end;
the thickness direction of the cutting edge is perpendicular to the thickness direction of the cutter bar, and the thickness direction of the cutting edge is perpendicular to the length direction of the cutter bar.
2. The tendon sheath minimally invasive surgical knife of claim 1, wherein,
the blade further includes a second edge opposite the first edge, the second edge facing away from the cutting end.
3. The tendon sheath minimally invasive surgical knife of claim 2, wherein,
one end of the first cutting edge and one end of the second cutting edge extend to the first wall surface, and one end of the first cutting edge, which deviates from the first wall surface, is connected with one end of the second cutting edge, which deviates from the first wall surface.
4. The tendon sheath minimally invasive surgical knife of claim 3, wherein,
the juncture of the first cutting edge and the second cutting edge is an acute angle.
5. The tendon sheath minimally invasive surgical knife of claim 2, wherein,
the first cutting edge is arc-shaped, and the first cutting edge protrudes towards the cutting end.
6. The tendon sheath minimally invasive surgical knife of claim 2, wherein,
the second cutting edge is arc-shaped, and the second cutting edge is sunken towards the direction of deviating from the handheld end.
7. The tendon sheath minimally invasive surgical knife of claim 1, wherein,
the first wall surface is also provided with scale marks, the scale marks are arranged between the cutting edge and the handheld end, and the scale marks are used for marking the cutting length of tendon sheaths.
8. The tendon sheath minimally invasive surgical knife of claim 7, wherein,
the length range of the scale marks is between three centimeters and five centimeters.
9. The tendon sheath minimally invasive surgical knife of claim 1, wherein,
the tendon sheath minimally invasive surgical knife further comprises an indicating piece, wherein the indicating piece is connected to the first wall surface, the indicating piece is arranged close to the handheld end, and the thickness direction of the indicating piece is parallel to the thickness direction of the cutting edge.
10. The tendon sheath minimally invasive surgical knife of claim 1, wherein,
and the cutting edge is arranged in the middle of the first wall surface along the width direction of the first wall surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320237747.3U CN220124770U (en) | 2023-02-15 | 2023-02-15 | Tendon sheath minimally invasive surgical knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320237747.3U CN220124770U (en) | 2023-02-15 | 2023-02-15 | Tendon sheath minimally invasive surgical knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220124770U true CN220124770U (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320237747.3U Active CN220124770U (en) | 2023-02-15 | 2023-02-15 | Tendon sheath minimally invasive surgical knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220124770U (en) |
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- 2023-02-15 CN CN202320237747.3U patent/CN220124770U/en active Active
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