CN219578972U - Tenosynovitis minimally invasive surgical knife - Google Patents
Tenosynovitis minimally invasive surgical knife Download PDFInfo
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- CN219578972U CN219578972U CN202320237534.0U CN202320237534U CN219578972U CN 219578972 U CN219578972 U CN 219578972U CN 202320237534 U CN202320237534 U CN 202320237534U CN 219578972 U CN219578972 U CN 219578972U
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- cutting edge
- tendon
- tenosynovitis
- minimally invasive
- invasive surgical
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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Abstract
The utility model discloses a tenosynovitis minimally invasive surgical knife which comprises a knife bar, a guide part and a knife edge. The cutter bar includes a cutting end and a hand-held end. The guide part is connected to the cutting end, and the guide part is the arc piece of arranging around the axis of cutter arbor, and the guide part includes the intrados and with intrados relative arrangement's extrados, intrados is used for laminating the tendon of being wrapped up by the tendon sheath. The cutting edge is connected in the extrados, and the thickness direction of cutting edge is perpendicular to the length direction of tool bar, and the cutting edge includes first blade, and first blade deviates from the tool bar setting. 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 for the recovery period after the operation. And moreover, the tendon can be protected by the guide part, so that the tendon can not be scratched in the tendon sheath cutting process by the scalpel, and the operation difficulty is reduced.
Description
Technical Field
The utility model relates to the technical field of surgical cutters, in particular to a tenosynovitis 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 leads to difficulty in sliding between the tendon and the tendon sheath at the inflamed position, so that the finger cannot voluntarily relax and straighten and contract and bend, 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 relatively.
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 addition, in the existing surgical knife cutting process, the blade is inserted from the skin position to the tendon position (the tendon sheath is positioned between the skin and the tendon, and the blade penetrates through the tendon sheath), however, the blade is possibly inserted into the tendon due to inaccurate control force, so that the blade scratches the tendon in the tendon sheath cutting process.
Disclosure of Invention
The utility model mainly aims to provide a tenosynovitis minimally invasive surgical knife which can reduce a skin cutting surface and scratch tendons on a wall surface.
In order to achieve the above object, the present utility model provides a tenosynovitis minimally invasive surgical knife, comprising:
the cutter bar comprises a cutting end and a handheld end;
the guide part is connected to the cutting end, is an arc-shaped piece arranged around the axis of the cutter bar, comprises an inner cambered surface and an outer cambered surface arranged opposite to the inner cambered surface, and is used for being attached to tendons wrapped by tendon sheaths;
the cutting edge is connected to the extrados, the thickness direction of cutting edge is perpendicular to the length direction of the cutter bar, the cutting edge includes first blade, first blade deviates from the cutter bar sets up.
In some embodiments, the intrados has an arc less than or equal to pi.
In some embodiments, the distance between the first cutting edge and the end of the guide portion facing away from the cutter bar is between one millimeter and two millimeters along the length of the cutter bar.
In some embodiments, the cutting edge further comprises a second cutting edge and a third cutting edge opposite to the first cutting edge, the second cutting edge is parallel to the length direction of the cutter bar, one end of the third cutting edge is connected to the end part of the second cutting edge facing the cutter bar, the other end of the third cutting edge is connected to the extrados, one end of the first cutting edge is connected to the end part of the second cutting edge facing away from the cutter bar, and the other end of the first cutting edge is connected to the extrados.
In some embodiments, the first edge is disposed at an acute angle to the second edge, and the second edge is perpendicular to the third edge.
In some embodiments, the angle between the first edge and the second edge is between thirty degrees and sixty degrees.
In some embodiments, the guide is removably coupled to the cutter bar.
In some embodiments, the tenosynovitis minimally invasive surgical blade further comprises a screw having one end threadedly coupled to the guide portion and the other end threadedly coupled to the cutter bar.
In some embodiments, the guide is provided with a first alignment slit extending parallel to the length direction of the knife bar, the knife bar is provided with a second alignment slit extending along the length direction of the knife bar, and the first alignment slit is arranged collinearly with the second alignment slit.
In some embodiments, the tenosynovitis minimally invasive surgical blade further comprises an indicator sheet connected to the handheld end, and a thickness direction of the indicator sheet is parallel to a thickness direction of the blade edge.
Compared with the prior art, the utility model has the beneficial effects that:
in the technical scheme of the utility model, the tenosynovitis minimally invasive surgical knife comprises a knife bar, a guide part and a knife edge. The cutter bar includes a cutting end and a hand-held end. The guide part is connected to the cutting end, the guide part is an arc piece arranged around the axis of the cutter bar, the guide part comprises an inner cambered surface and an outer cambered surface which is arranged opposite to the inner cambered surface, and the inner cambered surface is used for being attached to tendons wrapped by tendon sheaths. The cutting edge connect in the extrados, the thickness direction of cutting edge perpendicular to the length direction of tool bar, the cutting edge includes first blade, first blade deviates from the tool bar sets up.
In the surgical operation process of the surgical knife, a transverse seam is firstly cut along the direction perpendicular to the length direction of the tendon (the skin and the tendon sheath are cut together), then the end part of the guide part is inserted into a tendon abutting position along the transverse seam (the surgical knife is perpendicular to the length direction of the tendon at the moment), then the surgical knife is rotated, the surgical knife is parallel to the length direction of the tendon, the intrados of the guide part is attached to the tendon, the guide part is arranged around the tendon at the moment, and the first cutting edge of the cutting edge is positioned between the skin and the tendon and is used for cutting the tendon sheath. The surgical knife is pushed subsequently, so that the first cutting edge cuts the tendon sheath, and in the tendon sheath cutting process, the guide part is positioned between the tendon sheath and the tendon and slides relative to the tendon, and the first cutting edge only cuts the tendon sheath and does not cut the skin. 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. And moreover, as the tendon can be protected by the guide part, the tendon can not be scratched in the process of cutting the tendon sheath by the surgical knife, and the surgical difficulty is reduced.
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 tenosynovitis minimally invasive surgical blade 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 perspective view of a combined guide, blade and screw of a tenosynovitis minimally invasive surgical blade according to an embodiment of the present utility model.
Reference numerals illustrate:
a surgical knife 100;
a cutter bar 110; a hand-held end 111; a cutting end 112; a second alignment slit 113;
a guide 120; an intrados surface 121; an outer arc surface 122; a first alignment slit 123;
a blade 130; a first cutting edge 131; a second cutting edge 132; a third cutting edge 133;
an indicator sheet 140;
and a screw 150.
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 leads to difficulty in sliding between the tendon and the tendon sheath at the inflamed position, so that the finger cannot voluntarily relax and straighten and contract and bend, 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 relatively.
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 addition, in the existing surgical knife cutting process, the blade is inserted from the skin position to the tendon position (the tendon sheath is positioned between the skin and the tendon, and the blade penetrates through the tendon sheath), however, the blade is possibly inserted into the tendon due to inaccurate control force, so that the blade scratches the tendon in the tendon sheath cutting process.
In view of this, referring to fig. 1-3, the present utility model provides a tenosynovitis minimally invasive surgical blade 100, the tenosynovitis minimally invasive surgical blade 100 including a cutter bar 110, a guide 120, and a blade 130. The tool bar 110 includes a cutting end 112 and a hand-held end 111. The guide portion 120 is connected to the cutting end 112, the guide portion 120 is an arc piece arranged around the axis of the cutter bar 110, the guide portion 120 includes an intrados 121 and an extrados 122 arranged opposite to the intrados 121, and the intrados 121 is used for fitting tendons wrapped by tendon sheaths. The blade 130 is connected to the extrados 122, the thickness direction of the blade 130 is perpendicular to the length direction of the cutter bar 110, the blade 130 includes a first cutting edge 131, and the first cutting edge 131 is disposed away from the cutter bar 110.
In the surgical knife 100 of the present utility model, a transverse seam is cut along a direction perpendicular to the length direction of the tendon (the skin is cut along with the tendon sheath), then the end of the guiding portion 120 is inserted along the transverse seam to a position abutting against the tendon (the surgical knife 100 is perpendicular to the length direction of the tendon at this time), then the surgical knife 100 is rotated, the surgical knife 100 is made to be parallel to the length direction of the tendon, the intrados 121 of the guiding portion 120 is made to adhere to the tendon, the guiding portion 120 is arranged around the tendon at this time, and the first cutting edge 131 of the cutting edge 130 is positioned between the skin and the tendon at a position for cutting the tendon sheath. The surgical knife 100 is then pushed so that the first cutting edge 131 cuts the tendon sheath, and in the process of cutting the tendon sheath, the guide part 120 is located between the tendon sheath and the tendon and slides relative to the tendon, and the first cutting edge 131 only cuts the tendon sheath and does not cut the skin. In this scheme, the structure of the scalpel 100 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 110 of the scalpel 100, 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, since the guide part 120 can protect tendons, the tendons are not scratched in the process of cutting the tendon sheath by the surgical knife 100, and the operation difficulty is reduced.
In some embodiments, the arc of intrados 121 is less than or equal to pi. In other words, in the cross section of the guide portion 120, the central angle of the arc corresponding to the intrados 121 is less than or equal to one hundred eighty degrees. Specifically, the central angle may be one hundred eighty degrees, one hundred sixty degrees, one hundred twenty degrees, or the like. In this embodiment, the guide 120 can be easily attached to the tendon, and the guide 120 can be easily inserted.
In some embodiments, to further facilitate insertion of the guide 120, a cutting edge may be provided at the end of the guide 120 facing away from the knife bar 110, so that the cutting edge of the guide 120 may be directly used to insert into the skin to pierce the skin and tendon sheath during a short slit operation on the skin without using other knives to scratch the skin and tendon sheath.
Referring to fig. 2, in some embodiments, the first cutting edge 131 is between one millimeter and two millimeters from the end of the guide 120 facing away from the tool bar 110 along the length of the tool bar 110. Specifically, the distance between the first cutting edge 131 and the end of the guide 120 facing away from the cutter bar 110 may be one millimeter, one-point five millimeters, or two millimeters.
In some embodiments, the cutting edge 130 further includes a second cutting edge 132 and a third cutting edge 133 disposed opposite to the first cutting edge 131, wherein the second cutting edge 132 is parallel to the length direction of the cutter bar 110, one end of the third cutting edge 133 is connected to an end of the second cutting edge 132 facing the cutter bar 110, the other end is connected to the extrados 122, and one end of the first cutting edge 131 is connected to an end of the second cutting edge 132 facing away from the cutter bar 110, and the other end is connected to the extrados 122. In this embodiment, the back pull scalpel 100 and the push-up scalpel 100 can cut the tendon sheath, except that the front push scalpel 100 can cut the tendon sheath. Of course, in other embodiments, the second and third edges 132, 133 may also be absent.
In some embodiments, the first edge 131 is disposed at an acute angle to the second edge 132, and the second edge 132 is perpendicular to the third edge 133. In this aspect, the first cutting edge 131 can more conveniently penetrate into the tendon sheath during tendon sheath cutting.
In some embodiments, the angle between the first edge 131 and the second edge 132 is between thirty degrees and sixty degrees. Specifically, the included angle between the first and second cutting edges 131 and 132 may be thirty degrees, forty degrees, fifty degrees, sixty degrees, or the like.
Because of the different thicknesses of tendon sheaths at different locations or for different patients, in order to accommodate the different tendon sheath thicknesses, in some embodiments, the guide 120 is removably coupled to the knife bar 110. In this way, on the one hand, the operation can be performed on different patients only by replacing the guide part 120, so that the waste of materials is reduced, and the cross infection is avoided. On the other hand, a different blade 130 size may also be replaced to accommodate a different tendon sheath thickness.
The specific form of detachment of the guide 120 depends on the actual requirement, referring to fig. 3, in some embodiments, the tenosynovitis minimally invasive surgical knife 100 further includes a screw 150, one end of the screw 150 is screwed with the guide 120, and the other end is screwed with the knife bar 110, so as to realize detachable connection of the guide 120 and the knife bar 110. Of course, in other embodiments, the guide portion 120 and the cutter bar 110 may be detachably connected by clamping, which is not described herein.
In order to be able to have a fixed relative position with the tool bar 110 during each installation of the guide 120, in some embodiments the guide 120 is provided with a first alignment slit 123 extending parallel to the length direction of the tool bar 110, the tool bar 110 is provided with a second alignment slit 113 extending along the length direction of the tool bar 110, the first alignment slit 123 being arranged co-linearly with the second alignment slit 113. In this embodiment, when the screw 150 is used to connect the guide portion 120 and the cutter bar 110, the guide portion 120 and the cutter bar 110 can have a fixed relative position by aligning the first alignment slit 123 with the second alignment slit 113, so that the operator can operate the tool conveniently.
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 present utility model, the blade 130 cuts under the skin, so that the incision of the tendon sheath cannot be observed, and 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 surgical knife 100 further includes an indicator tab 140, the indicator tab 140 being attached to the hand-held end 111 of the knife bar 110, the thickness direction of the indicator tab 140 being parallel to the thickness direction of the blade 130. In operation, since the thickness direction of the indicating sheet 140 is parallel to the thickness direction of the blade 130, the deflection angle of the blade 130 can be adjusted by the deflection angle of the indicating sheet 140, so that the cutting angle of the blade 130 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 tenosynovitis minimally invasive surgical knife, comprising:
the cutter bar comprises a cutting end and a handheld end;
the guide part is connected to the cutting end, is an arc-shaped piece arranged around the axis of the cutter bar, comprises an inner cambered surface and an outer cambered surface arranged opposite to the inner cambered surface, and is used for being attached to tendons wrapped by tendon sheaths;
the cutting edge is connected to the extrados, the thickness direction of cutting edge is perpendicular to the length direction of the cutter bar, the cutting edge includes first blade, first blade deviates from the cutter bar sets up.
2. A tenosynovitis minimally invasive surgical blade according to claim 1,
the radian of the intrados is less than or equal to pi.
3. A tenosynovitis minimally invasive surgical blade according to claim 1,
along the length direction of the cutter bar, the distance between the first cutting edge and the end part of the guide part, which is away from the cutter bar, is between one millimeter and two millimeters.
4. A tenosynovitis minimally invasive surgical blade according to claim 1,
the cutting edge also comprises a second cutting edge and a third cutting edge which is opposite to the first cutting edge, the second cutting edge is parallel to the length direction of the cutter bar, one end of the third cutting edge is connected with the end part, facing the cutter bar, of the second cutting edge, the other end of the third cutting edge is connected with the extrados, one end of the first cutting edge is connected with the end part, facing away from the cutter bar, of the second cutting edge, and the other end of the first cutting edge is connected with the extrados.
5. A tenosynovitis minimally invasive surgical blade according to claim 4,
the first cutting edge and the second cutting edge are arranged at an acute angle, and the second cutting edge is perpendicular to the third cutting edge.
6. A tenosynovitis minimally invasive surgical blade according to claim 5,
the included angle between the first cutting edge and the second cutting edge is between thirty degrees and sixty degrees.
7. A tenosynovitis minimally invasive surgical blade according to claim 1,
the guide part is detachably connected with the cutter bar.
8. The tenosynovitis minimally invasive surgical blade of claim 7,
the tenosynovitis minimally invasive surgical knife further comprises a screw, one end of the screw is in threaded connection with the guide part, and the other end of the screw is in threaded connection with the knife bar.
9. A tenosynovitis minimally invasive surgical blade according to claim 8,
the guide part is provided with a first alignment slit extending in parallel with the length direction of the cutter rod, the cutter rod is provided with a second alignment slit extending along the length direction of the cutter rod, and the first alignment slit and the second alignment slit are arranged in a collinear manner.
10. A tenosynovitis minimally invasive surgical blade according to claim 1,
the tenosynovitis minimally invasive surgical knife further comprises an indicating piece, wherein the indicating piece is connected to the handheld end, and the thickness direction of the indicating piece is parallel to the thickness direction of the cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320237534.0U CN219578972U (en) | 2023-02-15 | 2023-02-15 | Tenosynovitis minimally invasive surgical knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320237534.0U CN219578972U (en) | 2023-02-15 | 2023-02-15 | Tenosynovitis minimally invasive surgical knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219578972U true CN219578972U (en) | 2023-08-25 |
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ID=87687150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320237534.0U Active CN219578972U (en) | 2023-02-15 | 2023-02-15 | Tenosynovitis minimally invasive surgical knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219578972U (en) |
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2023
- 2023-02-15 CN CN202320237534.0U patent/CN219578972U/en active Active
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