CN219147792U - Tenosynovitis minimally invasive surgical knife - Google Patents
Tenosynovitis minimally invasive surgical knife Download PDFInfo
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- CN219147792U CN219147792U CN202320237343.4U CN202320237343U CN219147792U CN 219147792 U CN219147792 U CN 219147792U CN 202320237343 U CN202320237343 U CN 202320237343U CN 219147792 U CN219147792 U CN 219147792U
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Abstract
The utility model discloses a tenosynovitis minimally invasive surgical knife, which comprises a knife bar, a spike part and a knife edge. The cutter bar includes a hand-held end and a cutting end. The tip portion is connected to the cutting end, and the tip portion, which is away from the cutter bar, is a tip end. The cutting edge is connected to the side wall of the spike part and is positioned between the spike end and the cutting end, and the side edge of the cutting edge, deviating from the spike part, is provided with a cutting edge. After the spike ends penetrate into tendons, the cutting edges can cut tendon sheaths wrapped outside the tendons along the direction perpendicular to the axis of the cutter bar. After the surgical knife is used for operation, only one or more penetrating points are left on the skin, and a strip of kerf is not formed, so that the skin is hardly required to be sutured, and the postoperative recovery period is quickened.
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.
Disclosure of Invention
The utility model mainly aims to provide a tenosynovitis minimally invasive surgical knife which can reduce a skin cutting surface.
To achieve the above object, the present utility model provides a tenosynovitis minimally invasive surgical knife, comprising:
the cutter bar comprises a handheld end and a cutting end;
the tip part is connected with the cutting end, and the end part of the tip part, which is away from the cutter bar, is a tip end;
the cutting edge is connected to the side wall of the spike part and positioned between the spike end and the cutting end, and a cutting edge is arranged on the side edge of the cutting edge, which is away from the spike part;
after the spike ends penetrate into tendons, the cutting edges can cut tendon sheaths wrapped outside the tendons along the direction perpendicular to the axis of the cutter bar.
In some embodiments, a diameter of a portion of the spike between the spike end and the cutting end is between one millimeter and one-five millimeters;
along the length direction of the knife rod, the length of the spike end is between one millimeter and two millimeters.
In some embodiments, the distance between the end of the spike end facing away from the cutting end and the blade edge is between one millimeter and two millimeters along the length of the blade.
In some embodiments, the distance between the cutting edge and the spike is between one millimeter and one five millimeters in a direction perpendicular to the length direction of the blade bar.
In some embodiments, the length of the cutting edge is parallel to the length of the blade bar.
In some embodiments, the blade further comprises a first side edge adjacent to the spike end and a second side edge facing away from the spike end, wherein one end of the first side edge is connected with the spike portion, the other end of the first side edge is connected with the end of the blade adjacent to the spike end, one end of the second side edge is connected with the spike portion, the other end of the second side edge is connected with the end of the blade facing away from the spike end, the first side edge is perpendicular to the blade, and the second side edge is acute-angled with the blade.
In some embodiments, the angle between the second side and the cutting edge is between thirty degrees and sixty degrees.
In some embodiments, the length of the blade is between ten centimeters and fifteen centimeters.
In some embodiments, the knife bar is cylindrical and the knife bar has a diameter between four and six millimeters, the axis of the knife bar coinciding with the axis of the spike.
In some embodiments, the tenosynovitis minimally invasive surgical blade further comprises an indicator sheet connected to the hand-held end, the indicator sheet having a thickness direction parallel to the thickness direction of the blade edge.
Compared with the prior art, the beneficial effects of the utility model are that:
in the technical scheme of the utility model, tenosynovitis minimally invasive surgery sword includes cutter arbor, spike portion and cutting edge. The cutter bar includes a hand-held end and a cutting end. The tip portion is connected to the cutting end, and the tip portion, which is away from the cutter bar, is a tip end. The cutting edge is connected to the side wall of the spike part and is positioned between the spike end and the cutting end, and the side edge of the cutting edge, deviating from the spike part, is provided with a cutting edge. After the spike ends penetrate into tendons, the cutting edges can cut tendon sheaths wrapped outside the tendons along the direction perpendicular to the axis of the cutter bar.
In tendon sheath surgery using the surgical knife of the present application, the finger is contracted and bent, and then the tip of the spike portion of the surgical knife is inserted into the skin (specifically, into the side of the tendon sheath inflammation position in the length direction of the tendon) and penetrates the tendon sheath until it is inserted into the tendon. In the above procedure, the longitudinal direction of the scalpel may be substantially perpendicular to the longitudinal direction of the tendon (the longitudinal direction of the scalpel is also substantially perpendicular to the hole axis direction of the inner hole of the tendon sheath). After the puncturing operation is completed, the finger can be relaxed and straightened by external force, for example, the operator can straighten the finger of the patient. In the process of straightening off with fingers and thumb, the tendon slides in the tendon sheath, and the in-process tendon that slides drives the scalpel along tendon length direction motion, and in the scalpel motion process, the blade of the cutting edge of scalpel can cut the tendon sheath (the blade is located the position between skin and the tendon, so only cuts the tendon sheath). When the inflammation length is longer, the puncture points are switched and the process is repeated, so that the position to be cut can be completely cut, in the cutting process, only one or more puncture points are left on the skin instead of a strip of lancing, so that the skin almost does not need to be sutured, and the postoperative recovery period is quickened.
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 to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained from the structures shown in these drawings without the need for inventive efforts to those skilled in the art.
Fig. 1 is a schematic diagram of a tenosynovitis 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 cross-sectional view of a tenosynovitis minimally invasive surgical blade according to an embodiment of the present utility model after a spike portion of the tenosynovitis minimally invasive surgical blade penetrates into a tendon.
Reference numerals illustrate:
a surgical knife 100;
a cutter bar 110; a hand-held end 111; a cutting end 112;
a blade 130; a cutting edge 131;
an indicator sheet 140;
The realization, functional characteristics and advantages of the present utility model will be further described with reference to the embodiments, referring to the accompanying drawings.
Detailed Description
The technical solutions of the present embodiments will be clearly and completely described below with reference to the drawings in the present embodiments, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, based on the embodiments herein, which would be within the purview of one of ordinary skill in the art without the creative effort, are contemplated as falling within the scope of the present utility model.
It should be noted that, if there is a directional indication (such as up, down, left, right, front, and rear … …) in the embodiment of the present utility model, the directional indication is merely used to explain the relative positional relationship between the components, the movement condition, and the like 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 present embodiment, 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 regarded as not exist, and is not within the protection scope of 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 sheaths at the inflamed sites need 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, referring to fig. 1-3, the present application provides a tendon sheath 30 minimally invasive surgical knife 100, the tendon sheath 30 minimally invasive surgical knife 100 including a knife shaft 110, a spike 120, and a blade 130. The tool bar 110 includes a hand-held end 111 and a cutting end 112. The spike 120 is connected to the cutting end 112, and the end of the spike 120 facing away from the cutter bar 110 is a spike 121. The blade 130 is connected to the side wall of the spike 120 and is located between the spike 121 and the cutting end 112, and a side edge 131 of the blade 130 facing away from the spike 120 is provided. Wherein, after the spike 121 pierces into the tendon 40, the cutting edge 131 can cut the tendon sheath 30 wrapped outside the tendon 40 along the direction perpendicular to the axis of the cutter bar 110.
In performing the tendon sheath 30 surgery using the surgical knife 100 of the present application, the finger is contracted and bent, and then the tip 121 of the spike 120 of the surgical knife 100 is inserted into the skin 20 (specifically, into the side of the inflamed portion of the tendon sheath 30 along the length direction of the tendon 40) and penetrates through the tendon sheath 30 until penetrating into the tendon 40. In the above process, the longitudinal direction of the scalpel 100 may be substantially perpendicular to the longitudinal direction of the tendon 40 (the longitudinal direction of the scalpel 100 is also substantially perpendicular to the hole axis direction of the inner hole of the tendon sheath 30). After the puncturing operation is completed, the finger can be relaxed and straightened by external force, for example, the operator can straighten the finger of the patient. In the straightening process, the tendon 40 slides in the tendon sheath 30, the tendon 40 drives the scalpel 100 to move along the length direction of the tendon 40 in the sliding process, and the cutting edge 131 of the cutting edge 130 of the scalpel 100 can cut the tendon sheath 30 in the moving process of the scalpel 100 (the cutting edge 131 is positioned between the skin 20 and the tendon 40, so that only the tendon sheath 30 is cut). When the inflamed length is longer, the penetration points are switched and the process is repeated, so that the required cutting position can be completely cut, and in the cutting process, only one or more penetration points are left on the skin 20 instead of a strip of kerf, so that the skin 20 almost does not need to be sutured, and the postoperative recovery period is quickened.
In order for the spike 120 to be able to easily pierce the tendon sheath 30, the average diameter of the spike 120 should not be too large. In order to secure structural strength of the spike 120, the average diameter of the spike 120 cannot be too small. In some embodiments, the portion of the spike 120 between the spike end 121 and the cutting end 112 is between one millimeter and one-five millimeters in diameter. Illustratively, the remaining portion of the spike 120, excluding the spike 121, may be one millimeter, one-three millimeter, one-five millimeter, or the like in diameter. In this embodiment, the diameter of the spike 120 can be made appropriate, so that the spike can be easily inserted into the tendon 40, and the spike can have high structural strength.
The spike 121 is used to penetrate into the tendon 40, and the length of the spike 121 must not be too short in order to ensure the penetration depth of the spike 121. In order to prevent the spike 121 from penetrating through the tendon 40 to penetrate into the tendon sheath 30 on the other side, the length of the spike 121 must not be excessively long. In view of this, in some embodiments, the length of the spike 121 is between one millimeter and two millimeters along the length of the knife bar 110. Illustratively, the length of the spike 121 may be one millimeter, one-point five millimeters, two millimeters, or the like. In this embodiment, the spike 121 can easily penetrate into the tendon 40, and the spike 121 can be prevented from penetrating too long into the tendon 40.
Likewise, in some embodiments, the distance between the end of the spike 121 facing away from the cutting end 112 and the blade 130 is between one millimeter and two millimeters along the length of the knife bar 110. Illustratively, the distance between the end of the spike 121 facing away from the cutting end 112 and the blade 130 may be one millimeter, one-five millimeters, two millimeters, or the like. In this embodiment, the spike 121 can easily penetrate into the tendon 40, and the spike 121 can be prevented from penetrating too long into the tendon 40.
In some embodiments, the distance between the cutting edge 131 and the spike 120 is between one millimeter and one-five millimeters in a direction perpendicular to the length direction of the knife bar 110. Illustratively, the distance between the cutting edge 131 and the spike 120 may be one millimeter, one-three millimeters, one-five millimeters, or the like. In this scheme, the distance between the cutting edge 131 and the spike 120 is not too long, so that the spike 120 is prevented from penetrating into the tendon 40, and the cutting effect of the cutting edge 131 is not weakened due to too short distance between the cutting edge 131 and the spike 120.
Referring to fig. 2, in some embodiments, the length of the cutting edge 131 is parallel to the length of the knife bar 110.
In some embodiments, blade 130 further includes a first side edge proximate to spike 121 and a second side edge distal from spike 121, the first side edge having one end connected to spike 120 and the other end connected to blade 131 proximate to the end of spike 121, the second side edge having one end connected to spike 120 and the other end connected to the end of blade 131 distal from spike 121, the first side edge disposed perpendicular to blade 131 and the second side edge disposed at an acute angle to blade 131.
In some embodiments, the second side edge is at an angle between thirty degrees and sixty degrees from the cutting edge 131. Illustratively, the second side edge may be angled with respect to the cutting edge 131 by thirty degrees, forty degrees, fifty degrees, sixty degrees, or the like.
In some embodiments, the length of the knife bar 110 is between ten centimeters and fifteen centimeters. Illustratively, the length of the tool bar 110 may be ten centimeters, thirteen centimeters, fifteen centimeters, or the like.
The specific structure of the cutter bar 110 depends on the actual requirement, and in some embodiments, the cutter bar 110 is cylindrical, and the diameter of the cutter bar 110 is between four millimeters and six millimeters, and the axis of the cutter bar 110 coincides with the axis of the spike 120. This arrangement can further facilitate handling of the knife bar 110 by the operator.
The applicant has also found that in the prior art, the angle of the cut and the direction of the slit during the tendon sheath 30 cutting can be adjusted in real time by observation by the human eye. In this application, the blade 130 cuts under the skin 20, so that the incision of the tendon sheath 30 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 is only a preferred embodiment of the present utility model, and is not intended to limit the scope of the present utility model, and all the equivalent structural changes made by the present specification and the accompanying drawings under the practical concept of the present utility model, or the direct/indirect application in other related technical fields are included in the scope of the present utility model.
Claims (10)
1. A tenosynovitis minimally invasive surgical knife, comprising:
the cutter bar comprises a handheld end and a cutting end;
the tip part is connected with the cutting end, and the end part of the tip part, which is away from the cutter bar, is a tip end;
the cutting edge is connected to the side wall of the spike part and positioned between the spike end and the cutting end, and a cutting edge is arranged on the side edge of the cutting edge, which is away from the spike part;
after the spike ends penetrate into tendons, the cutting edges can cut tendon sheaths wrapped outside the tendons along the direction perpendicular to the axis of the cutter bar.
2. A tenosynovitis minimally invasive surgical blade according to claim 1,
the diameter of the portion of the spike between the spike end and the cutting end is between one millimeter and one point and five millimeters;
along the length direction of the knife rod, the length of the spike end is between one millimeter and two millimeters.
3. A tenosynovitis minimally invasive surgical blade according to claim 1,
along the length direction of the cutter bar, the distance between the end part of the spike end, which is away from the cutting end, and the cutting edge is between one millimeter and two millimeters.
4. A tenosynovitis minimally invasive surgical blade according to claim 1,
along the direction perpendicular to the length direction of the knife rod, the distance between the cutting edge and the spike part is between one millimeter and one point and five millimeters.
5. A tenosynovitis minimally invasive surgical blade according to claim 1,
the length direction of the cutting edge is parallel to the length direction of the cutter rod.
6. A tenosynovitis minimally invasive surgical blade according to claim 1,
the cutting edge is still including being close to the first side of spike end and deviating from the second side of spike end, first side one end is connected spike portion, the other end is connected the blade is close to the tip of spike end, second side one end is connected spike portion, the other end is connected the blade deviates from the tip of spike end, first side with the blade is arranged perpendicularly, the second side with the blade is the acute angle and arranges.
7. The tenosynovitis minimally invasive surgical blade of claim 6,
the included angle between the second side edge and the cutting edge is between thirty degrees and sixty degrees.
8. A tenosynovitis minimally invasive surgical blade according to claim 1,
the length of the knife rod is between ten cm and fifteen cm.
9. A tenosynovitis minimally invasive surgical blade according to claim 1,
the cutter bar is cylindrical, the diameter of the cutter bar is between four millimeters and six millimeters, and the axis of the cutter bar coincides with the axis of the spike part.
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 |
|---|---|---|---|
| CN202320237343.4U CN219147792U (en) | 2023-02-15 | 2023-02-15 | Tenosynovitis minimally invasive surgical knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320237343.4U CN219147792U (en) | 2023-02-15 | 2023-02-15 | Tenosynovitis minimally invasive surgical knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219147792U true CN219147792U (en) | 2023-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320237343.4U Active CN219147792U (en) | 2023-02-15 | 2023-02-15 | Tenosynovitis minimally invasive surgical knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219147792U (en) |
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- 2023-02-15 CN CN202320237343.4U patent/CN219147792U/en active Active
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