Probe cutter for stenosing tenosynovitis

Abstract

The invention provides a probing and cutting knife for stenosing tenosynovitis, which comprises a knife bar and a probing tongue fixed at the far end part of the knife bar, the probing tongue comprises a front probing tongue extending forwards from the far end part of the knife bar and a rear probing tongue extending backwards from the far end part of the knife bar, the probing cutter further comprises a pair of blades arranged on the rear probing tongue at intervals in the left-right direction, and the blades extend upwards from the rear probing tongue. According to the probing and cutting knife for stenosing tenosynovitis, the front probing tongue and the rear probing tongue are matched to enlarge a gap between a tendon sheath and a tendon, meanwhile, the tendon sheath corresponding to a pair of blades on the rear probing tongue is dissociated and cut off by the blades, the remaining tendon sheath is shortened, and the probability of tendon sheath relapse is greatly reduced.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more particularly to a probe for stenosing tenosynovitis. Background Technology

[0002] Stenosing tenosynovitis is currently the most common small joint disease of the hand, and desensitizing tenosynovitis release surgery is the most effective treatment for this disease in clinical practice. The specific procedure for desensitizing tenosynovitis release is as follows: a transverse or longitudinal incision is made above the affected joint. The soft tissue above the lesion is separated using a venturi forceps. The skin and soft tissue are then pulled to both sides using retractors to expose the edematous tendon sheath. The venturi forceps are then forcefully passed through the gap between the tendon sheath and the tendon. After determining the gap, the narrowed tendon sheath is cut open with a scalpel. The released tendon is then lifted high using the venturi forceps, indicating satisfactory release. However, using venturi forceps results in a larger surgical incision, more severe soft tissue damage, and a relatively complicated surgical procedure.

[0003] In view of this, it is necessary to design a probe for stenosing tenosynovitis to solve one of the above problems. Summary of the Invention

[0004] This application provides a probe for stenosing tenosynovitis, which simplifies the surgical procedure and reduces the recurrence rate for patients.

[0005] To achieve the above objectives, the technical solution provided in this application is as follows: This application provides a probe for stenosing tenosynovitis, wherein the probe includes a shank and a probe tongue fixed to the distal end of the shank. The probe tongue includes a front probe tongue extending forward from the distal end of the shank and a rear probe tongue extending rearward. The probe also includes a pair of blades spaced apart on the rear probe tongue in a left-right direction, and the pair of blades extending upward from the rear probe tongue.

[0006] Furthermore, the front probe and the rear probe are on the same plane, the angle between the front probe and the cutter bar is not less than 90°, and the angle between the rear probe and the cutter bar is not greater than 90°.

[0007] Furthermore, in the left-right direction, the size of the front probe is not greater than the size of the rear probe.

[0008] Furthermore, a pair of blades are positioned close to both ends of the rear probe in a left-right direction, with the rear ends of the blades spaced apart from the rear ends of the rear probe.

[0009] Furthermore, the distance between a pair of blades is 2mm-4mm.

[0010] Furthermore, each of the two blades has a blade body and a cutting edge disposed at one end of the blade body away from the rear probe, wherein the extending direction of the cutting edge is set at an obtuse angle to the extending direction of the rear probe.

[0011] Furthermore, the outer periphery of the tool holder is provided with anti-slip texture.

[0012] Furthermore, the probe cutter also includes an arc-shaped hook fixedly connected to the proximal end of the cutter bar, the arc-shaped hook being located at the front or rear of the cutter bar.

[0013] Furthermore, in the radial direction of the tool holder, the maximum radial dimension of the arc-shaped hook is smaller than the dimensions of the front probe and the rear probe.

[0014] Furthermore, the front probe and the rear probe are formed on the same plane, and the cutting blade also includes a connecting rod connecting the probe and the blade bar. In the radial direction of the blade bar, the size of the probe is between the size of the connecting rod and the size of the blade bar.

[0015] Compared with related technologies, the beneficial effects of this application are as follows: by using the probe knife for stenosing tenosynovitis of this application, the gap between the tendon sheath and the tendon is widened by the cooperation of the anterior probe tongue and the posterior probe tongue. At the same time, the tendon sheath corresponding to the pair of blades on the posterior probe tongue is freed and removed by the blades, and the remaining tendon sheath is shortened, which greatly reduces the recurrence rate of tendon sheath. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the probe for stenosing tenosynovitis according to one embodiment of the probe of this application.

[0017] Figure 2 yes Figure 1 Enlarged view of a section of the probe cutter's structure.

[0018] Among them, 10-blade shank, 11-anti-slip texture, 20-front probe, 30-rear probe, 40-blade, 41-blade body, 42-edge, 50-connecting rod, 60-arc hook knife. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0020] It should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only to simplify the description of this application and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application.

[0021] In the various figures of this application, for ease of illustration, certain dimensions of structures or parts may be exaggerated relative to other structural parts; therefore, they are only used to illustrate the basic structure of the subject matter of this application.

[0022] like Figure 1 and Figure 2 As shown, a procingure for stenosing tenosynovitis includes a blade 10 and a probe fixed to the distal end of the blade 10. The probe includes a front probe 20 extending forward from the distal end of the blade 10 and a rear probe 30 extending backward. The procingure also includes a pair of blades 40 spaced apart on the rear probe 30 in a left-right direction. The pair of blades 40 extend upward from the rear probe 30. After probing the tendon sheath and the gap between the tendon sheath and the tendon, the procingure pulls the rear probe 30 backward, cutting the tendon sheath in a free state at the corresponding positions of the pair of blades 40, reducing the probability of the tendon sheath regrowing, and thus reducing the probability of tenosynovitis recurrence.

[0023] In this application, the end closer to the patient is defined as the distal end, and the end closer to the doctor is defined as the proximal end. The scalpel 10 of this application extends in the direction from the proximal end to the distal end. The probe is fixed at the distal end of the scalpel 10, and the front probe 20 and the rear probe 30 are respectively fixed on opposite sides of the distal end of the scalpel 10.

[0024] The blade handle 10 is cylindrical and extends in the vertical direction. The outer periphery of the blade handle 10 is provided with anti-slip texture 11 to ensure the flexibility and stability of the doctor's grip on the blade handle 10.

[0025] In a preferred embodiment of this application, the front probe 20 and the rear probe 30 are formed on the same plane. The probe also includes a connecting rod 50 connecting the probe and the blade 10. In the radial direction of the blade 10, the size of the probe is between the size of the connecting rod 50 and the size of the blade 10, that is, the size of the probe is larger than that of the connecting rod 50. This ensures that the ends of the front probe 20 and the rear probe 30 extend beyond the connecting rod 50, facilitating the exploration of tendon sheaths and tendons. At the same time, since the connecting rod 50 contacts the patient's wound, the smaller size of the connecting rod 50 can reduce the wound area of ​​the patient.

[0026] The plane containing the front probe 20 and the rear probe 30 is inclined relative to the extension direction of the blade shank 10. The angle between the front probe 20 and the blade shank 10 is not less than 90°, and the angle between the rear probe 30 and the blade shank 10 is not greater than 90°. That is, the front probe 20 is inclined downward and the rear probe 30 is inclined upward, which facilitates the exploration of the location of tendon sheaths and tendons.

[0027] The width direction of the front probe 20 and the rear probe 30 is in the left-right direction. In the left-right direction, the size of the front probe 20 is not greater than the size of the rear probe 30. The main function of the front probe 20 is to locate the upper end of the tendon sheath and squeeze the tendon sheath upward, increasing the contact area between the front probe 20 and the tendon sheath, so as to protect the soft tissue above the tendon sheath from the influence of surgery.

[0028] A pair of blades 40 are positioned approximately laterally near both ends of the rear probe 30, with the rear ends of the blades 40 spaced apart from the rear ends of the rear probe 30. Before cutting the tendon sheath, the rear probe 30 is inserted into the gap between the tendon sheath and the tendon to locate the correct gap, improving surgical precision. Because the rear ends of the blades 40 do not extend to the rear ends of the rear probe 30, the blades 40 can prevent injury to the tendon sheath or tendon when the rear probe 30 is inserted between the tendon sheath and the tendon. In other words, the rear ends of the rear probe 30 serve as guides for locating the tendon. Once the rear probe 30 locates the appropriate position between the tendon sheath and the tendon, it is then pulled backward, using the blades 40 on the rear probe 30 to achieve the purpose of freeing and cutting the tendon sheath.

[0029] The distance between the pair of blades 40 is 2mm-4mm, that is, the width of the rear probe tongue 30 is also 2mm-4mm, which facilitates the exploration of the location of tendon sheaths and tendons, and can also reduce the wound area of ​​the patient.

[0030] Preferably, the distance between the pair of blades 40 is 3mm, and the tendon sheath is cut free of 3mm. That is, there is a 3mm gap between the two tendon sheath incisions to prevent the two tendon sheath incisions from re-adhering together. The free cutting method of the tendon sheath in this application greatly reduces the probability of recurrence of tenosynovitis compared with the method of directly cutting the tendon sheath.

[0031] In this application, the doctor uses the probe to explore the tendon sheath, treat the soft tissue around the tendon sheath, insert it between the tendon sheath and the tendon, and cut the tendon sheath in one go. There is no need to repeatedly insert the probe into the patient's surgical position, which simplifies the surgical process, saves surgical time, and reduces the patient's wound area.

[0032] like Figure 2As shown, each of the pair of blades 40 has a blade body 41 and a cutting edge 42 located on the blade body 41 away from the rear probe 30. The extending direction of the cutting edge 42 is set at an obtuse angle to the extending direction of the rear probe 30. During the cutting of the tendon sheath, the cutting edge 42 and the tendon sheath are at an angle, which facilitates the cutting edge 42 to quickly cut the tendon sheath and saves surgical time.

[0033] In another preferred embodiment of this application, the probe further includes an arc-shaped hook 60 fixedly connected to the other end of the blade 10. That is, the arc-shaped hook 60 is fixed to the upper end of the blade 10. After the doctor cuts the tendon sheath with the blade 40, the arc-shaped hook 60 is used to gently hook the tendon to check whether the tendon sheath has been completely released. The arc-shaped hook 60 is located at the front or rear of the blade 10, facilitating precise switching by the doctor.

[0034] In the radial direction of the scalpel 10, the maximum radial dimension of the arc-shaped puller 60 is smaller than the dimensions of the front probe 20 and the rear probe 30, so as to avoid increasing the area of ​​the patient's wound during the process of the arc-shaped puller 60 detecting the state of tendon sheath release.

[0035] The procedure for performing surgery on a patient using the probe for stenosing tenosynovitis described in this application is as follows: The skin at the lesion is disinfected. A transverse incision of approximately 0.5 cm is made using a small blade at the proximal or distal end above the lesion. The proximal end is the end closer to the surgeon, and the distal end is the end further away from the surgeon, without affecting the surgical process. The probing tongue 20 at the front of the probe pushes the tendon sheath upwards, maximizing the protection of the soft tissue above the tendon sheath. During the advancement of the probing tongue 30, the swollen, thickened tendon sheath and the gap between the tendon sheath and the tendon can be detected. The posterior probing tongue 30, designed on the posterior side, is inserted into the gap between the tendon sheath and the tendon. Once the gap is correctly located, the probe is gently pulled backwards. The pair of blades 40 on the posterior probing tongue 30 cuts the tendon sheath, simultaneously freeing and removing approximately 3 mm of the tendon sheath between the blades, significantly reducing the recurrence rate of the severed tendon sheath. After the release is complete, the curved hook knife 60 can be used to gently hook the tendon to check whether the release of the tendon sheath is complete. This design offers advantages such as greater surgical precision, smaller incisions, simpler operation, and lower recurrence rate.

[0036] In summary, the invasive cutting knife for stenosing tenosynovitis of this application expands the gap between the tendon sheath and the tendon through the cooperation of the front probe tongue 20 and the rear probe tongue 30. At the same time, the tendon sheath corresponding to the pair of blades 40 on the rear probe tongue 30 is freed and removed by the blades. There is a certain distance between the two tendon sheath wounds, which greatly reduces the probability of tendon sheath recurrence.

[0037] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0038] The detailed descriptions listed above are merely specific illustrations of feasible embodiments of this application and are not intended to limit the scope of protection of this application. All equivalent embodiments or modifications made without departing from the spirit of the art of this application should be included within the scope of protection of this application.

Claims

1. A probe for stenosing tenosynovitis, characterized in that, The probe includes a shank and a probe tongue fixed to the distal end of the shank. The probe tongue includes a front probe tongue extending forward from the distal end of the shank and a rear probe tongue extending backward. The probe also includes a pair of blades spaced apart on the rear probe tongue in a left-right direction, and the pair of blades extending upward from the rear probe tongue.

2. The probe for stenosing tenosynovitis as described in claim 1, characterized in that, The front probe and the rear probe are on the same plane, the angle between the front probe and the cutter bar is not less than 90°, and the angle between the rear probe and the cutter bar is not greater than 90°.

3. The probe for stenosing tenosynovitis as described in claim 1, characterized in that, In the left-right direction, the size of the front probe is not greater than the size of the rear probe.

4. The probe for stenosing tenosynovitis as described in claim 1, characterized in that, A pair of blades are positioned close to both ends of the rear probe in a left-right direction, with the rear ends of the blades spaced apart from the rear ends of the rear probe.

5. The probe for stenosing tenosynovitis as described in claim 1, characterized in that, The distance between a pair of blades is 2mm-4mm.

6. The probe for stenosing tenosynovitis as described in claim 3, characterized in that, Each pair of blades has a blade body and a cutting edge disposed at one end of the blade body away from the rear probe, wherein the extending direction of the cutting edge is set at an obtuse angle to the extending direction of the rear probe.

7. The probe for stenosing tenosynovitis as described in claim 1, characterized in that, The outer periphery of the tool holder is provided with anti-slip texture.

8. The probe for stenosing tenosynovitis as described in any one of claims 1 to 7, characterized in that, The probe also includes an arc-shaped hook fixedly connected to the near end of the blade, the arc-shaped hook being located at the front or rear of the blade.

9. The probe for stenosing tenosynovitis as described in claim 8, characterized in that, In the radial direction of the tool holder, the maximum radial dimension of the arc-shaped hook is smaller than the dimensions of the front probe and the rear probe.

10. The probe for stenosing tenosynovitis as described in any one of claims 1 to 7, characterized in that, The front probe and the rear probe are formed on the same plane. The cutting blade also includes a connecting rod that connects the probe and the blade. In the radial direction of the blade, the size of the probe is between the size of the connecting rod and the size of the blade.

Images