WO2021027385A1

WO2021027385A1 - Surgical device for tenosynovitis

Info

Publication number: WO2021027385A1
Application number: PCT/CN2020/096023
Authority: WO
Inventors: 王志荣; 施建东; 徐世平; 季科
Original assignee: 张家港市中医医院
Priority date: 2019-08-14
Filing date: 2020-06-15
Publication date: 2021-02-18
Also published as: CN110338885A; CN110338885B

Abstract

A surgical device for tenosynovitis, comprising an inserting portion and a cutting portion. The inserting portion comprises a sleeve (10), a fixing member (11), and a needle tip (12), wherein the sleeve (10) is hollow, the needle tip (12) is connected to one end of the sleeve (10), the fixing member (11) surrounds the needle tip (12) and is connected to the sleeve (10), and the needle tip (12) penetrates through a connecting member; the cutting portion comprises a cutting rod (20), and a blade (22) and a pushing assembly (23) which are provided at a side portion of the cutting rod (20), wherein the cutting rod (20) is rotatably inserted into the sleeve (10), the cutting rod (20) is coaxial with the sleeve (10), and a position, corresponding to the blade (22) and the pushing assembly (23), of the sleeve (10) is provided with an opening (101); the cutting rod (20) is rotated to control the blade (22) and the pushing assembly (23) to be exposed, and peripheral nerves are pushed and a tendon sheath is cut; or the cutting rod (20) is rotated to control the blade (22) and the pushing assembly (23) to be concealed, and the surgical device for tenosynovitis is inserted or pulled out. The surgical device for tenosynovitis is used for cutting the tendon sheath under the situation of a lower incision, the cutting operation is precise, the damage to the peripheral nerves is less, and the treatment effect is good.

Description

Tenosynovitis surgical device

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on August 14, 2019 with the application number 201910750231.7 and the invention title "A surgical device for tenosynovitis", the entire content of which is incorporated into this application by reference.

Technical field

The invention relates to the technical field of medical equipment, and more precisely to a tenosynovitis surgical device.

Background technique

Tenosynovitis is a tendon condition in the hand. Tenosynovitis symptoms occur when the tendon cannot pass through the tendon smoothly. Tenosynovitis is mostly caused by repeated and large amounts of movement of the tendon. Frequent friction between the tendon and the tendon sheath results in swelling of the tendon. The swelling part of the tendon cannot pass through the tendon sheath smoothly, causing pain when the patient is bending or straightening the finger. In severe cases, the tendon cannot pass through the tendon sheath at all. , Will cause the patient to be unable to bend their fingers. At this stage, the treatment methods for tenosynovitis are mainly divided into conservative treatment and surgical treatment. Conservative treatment includes local immobilization, physical therapy, drugs, and occlusive treatment. Conservative treatment is usually aimed at patients with early tenosynovitis. It can relieve pain to a certain extent and has good short-term effects. However, it has limited effect on patients with more serious conditions and is prone relapse. The current surgical treatment usually uses ordinary scalpel blades for surgical operations. Ordinary scalpel blades have many shortcomings in the treatment of stenosing tenosynovitis, such as long incisions, large injuries, heavy bleeding, etc., and the surgical incision needs to be sutured after the operation. It will not be damaged, and will leave large scars. In view of the shortcomings of ordinary surgical blades, some surgical tools specifically for tenosynovitis have appeared in the field, such as special blades or hook knives. However, these surgical tools are basically used in the same way as ordinary surgical blades. To make a larger incision, the operation process of the operation requires a doctor, and sometimes the doctor cannot directly observe the tendon sheath, and the operation accuracy is difficult to guarantee. Existing surgical tools are generally similar to ordinary surgical blades. In the process of cutting the tendon sheath, it is easy to cause damage to the nerves around the incision, affect the patient's hand movement, and then affect the patient's normal life. To sum up, there is a need in the art for a tenosynovitis surgical device. The tenosynovitis surgical device can minimize damage to the hand nerves while reducing the incision as much as possible. The success rate of treatment is high, and the patient can recover quickly after surgery. .

Summary of the invention

In view of this, the main purpose of the present invention is to provide a tenosynovitis surgical device, including an insertion part and a cutting part. The insertion part includes a sleeve, a fixing part and a needle. The sleeve is hollow, the needle is connected to one end of the sleeve, and the fixing part surrounds the needle. It is connected with the sleeve, and the needle passes through the connector. The cutting part includes a cutting rod and a blade and a pushing assembly arranged on the side of the cutting rod. The cutting rod is rotatably inserted into the sleeve, and the cutting rod and the sleeve are coaxial. The barrel, the blade and the pushing assembly have openings at the corresponding positions. Rotating the cutting rod controls the blade and pushing assembly to expose, pushing away the peripheral nerve and cutting the tendon sheath, or turning the cutting rod to control the blade and pushing assembly to hide, insert or pull out the tenosynovitis Surgical device.

In order to achieve the above object, the present invention provides a tenosynovitis surgical device for inserting into a tendon to cut the tendon sheath. The tenosynovitis surgical device includes an inserting part and a cutting part, and the inserting part includes a sleeve, a fixing member, and a A needle, the cutting part includes a cutting rod, a blade, and a pushing assembly, the sleeve is a hollow tube, one end of the sleeve is connected with the needle, the fixing member surrounds the needle, and the sleeve The side of the barrel has an opening; the cutting rod is a rod-shaped structure, the cutting rod is rotatably located inside the sleeve, the side of the cutting rod has a groove, and the blade is arranged in the groove Inside, the pushing assembly is arranged on the side of the cutting rod and is arranged next to the groove, and the pushing assembly is located at the end of the groove away from the needle, and the cutting rod is rotated to control the The blade and the pushing assembly are aligned with the opening.

Preferably, the pushing assembly includes an elastic body and two elastic plates, the elastic body is storably arranged on the side of the cutting rod, and the elastic body is arranged adjacent to the groove, two The elastic plates are respectively arranged on both sides of the elastic body and connected with the elastic body, and the two elastic plates are rotatably connected with the cutting rod.

Preferably, it comprises a sleeve indicating disc and a cutting indicating disc, one end of the sleeve away from the needle is connected to the sleeve indicating disc, the sleeve indicating disc is ring-shaped, and the cutting rod is away from all One end of the needle is connected with the cutting indicator disk, and the cutting indicator disk is in the shape of a disc.

Preferably, the sleeve indicator disk has a first outer indicator arrow and a second outer indicator arrow, the cutting indicator disk has an inner indicator arrow, the first outer indicator arrow and the second outer indicator arrow The indicator arrows are arranged oppositely, the first outer indicator arrow is aligned with the opening along the axis of the sleeve, and the inner indicator arrow is aligned with the blade along the axis of the cutting rod.

Preferably, it includes a rotating shaft, and the cutting rod is rotatably connected with the sleeve through the rotating shaft.

Preferably, the cross-section of the needle is cross-like.

Preferably, the cross section of the opening is semicircular.

Preferably, the cross section of the groove is fan-shaped.

Compared with the prior art, the surgical device for tenosynovitis disclosed in the present invention has the advantage that the surgical device for tenosynovitis can be smoothly inserted into the tendon with a small incision, and can be removed smoothly. The injury caused by the tendon is small; the tenosynovitis surgical device can be effectively fixed on the tendon, and after adjustment, the tendon sheath can be accurately clamped at the opening of the sleeve, and the blade can be driven to cut the tendon sheath by moving the fingers. The cutting is accurate and the operation Convenient; the pushing component can push the nerve tissue outside the tendon sheath to prevent the blade from causing damage to the nerve, which is beneficial to the patient's recovery.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

Figure 1 is a schematic diagram of the structure of a tenosynovitis surgical device of the present invention in a cutting state.

Figure 2 is a schematic diagram of the structure of a tenosynovitis surgical device of the present invention when it is inserted and removed.

Fig. 3 is a schematic diagram of the structure of the insertion part of a tenosynovitis surgical device of the present invention.

Fig. 4 is a schematic structural diagram of the cutting part of a tenosynovitis surgical device of the present invention in a cutting state.

Fig. 5 is a schematic diagram of the structure of the cutting part of a tenosynovitis surgical device of the present invention when it is inserted and removed.

Fig. 6 is a schematic diagram of the cutter head structure of a tenosynovitis surgical device of the present invention.

Fig. 7 is a left view of a surgical device for tenosynovitis of the present invention.

Fig. 8 is a right side view of a surgical device for tenosynovitis of the present invention.

detailed description

As can be seen in conjunction with Figures 1 to 5, a tenosynovitis surgical device of the present invention includes an insertion part and a cutting part. The insertion part further includes a sleeve 10, a fixing member 11, a needle 12, and a sleeve indicator plate 13. The cutting part further includes a cutting rod 20, a groove 21, a blade 22, a pushing assembly 23, a rotating shaft 24, and a cutting indicator plate 25.

Specifically, as shown in FIG. 3, the sleeve 10 is a hollow tube, and one end of the sleeve 10 is closed and the other end is open. The closed end of the sleeve 10 is connected to the needle 12, and the sleeve 10 is One end of the opening 10 is connected with the sleeve indicating plate 23. The fixing member 11 surrounds the needle 12, and the fixing member 11 is connected to the closed end of the sleeve 10, and the end of the needle 12 away from the sleeve 10 passes through the fixing member 11. The sleeve indicator disc 23 is ring-shaped, and the internal aperture of the sleeve indicator disc 23 is the same as the internal aperture of the sleeve 10. When the insertion part is inserted into the tendon of the patient's hand, the needle 12 drives the fixing member 11 to be inserted into the tendon together. The fixing member 11 can be in an expanded form. When the fixing member 11 is located inside the tendon When it expands, the sleeve 10 is fixed to prevent the sleeve 10 from rotating in the direction around its axis. By pulling out the sleeve 10 away from the needle 12, the fixing member 11 and the needle are separated from the tendon. The side of the sleeve 10 has an opening 101, the opening 101 is arranged next to the fixing member 11, and the cross section of the opening 101 is semicircular. When the angle of the insertion portion is adjusted to insert it into the tendon, the tendon sheath adjacent to the tendon will snap into the opening.

As shown in FIGS. 4 and 5, the cutting rod 20 is a rod-shaped structure, and the rod diameter of the cutting rod 20 is smaller than the inner aperture of the sleeve 10, and the cutting rod 20 is coaxial with the sleeve 10 Is inserted into the sleeve 10, and the cutting rod 20 can rotate inside the sleeve 10, and the rotation direction of the cutting rod 20 is around its axis. One end of the cutting rod 20 is connected with the rotating shaft 24, and the other end is connected with the cutting indicator disc 25. The rotating shaft 24 is coaxial with the cutting rod 20, and the rotating shaft 24 is rotatably connected with the closed end of the sleeve 10. The cutting indicator disk 25 is in the shape of a disc, and the cutting indicator disk 25 is coaxial with the cutting rod 20. The side of the cutting rod 20 has the groove 21, the groove 21 is arranged next to the rotating shaft 24, the groove 21 has a sector-shaped section, and the blade 22 is arranged inside the groove 21, and The blade 22 is arranged along the axial direction of the cutting rod 20. The pushing assembly 23 is arranged at the side of the cutting rod 20 and is arranged next to the groove 21, and the pushing assembly 23 is arranged at an end of the groove 21 away from the rotating shaft 24. The groove 21 and the pushing component 23 are aligned with the opening 101, and the groove 21 and the pushing component 23 and the opening 101 have the same length along the axis of the cutting rod 20. When the cutting rod 20 is rotated so that the groove 21 and the pushing assembly 23 are aligned with the opening 101, the blade 22 contacts the tendon sheath, and the pushing assembly 23 protrudes out of the opening 101, The nerve tissue outside the tendon sheath is pushed to prevent the blade 22 from cutting the nerve tissue. At this time, the tenosynovitis surgical device is in a cutting state. After the cutting is completed, the cutting rod 20 is rotated, and the sleeve 10 squeezes and compresses the pushing assembly 23, so that the blade 22 and the pushing assembly 23 are both hidden inside the sleeve 10. The inside of the opening 101 is filled by the cutting rod 20, and the tenosynovitis surgical device can be pulled out smoothly. At this time, the tenosynovitis surgical device is in the plugging state.

Specifically, the pushing assembly 23 includes an elastic body 231 and two elastic plates 232, the elastic body 231 is storably disposed on the side of the cutting rod 20, and the elastic body 231 and the groove 21 is set next to it. Two elastic plates 232 are respectively arranged on both sides of the elastic body 231 to be connected to the elastic body 231, both of the elastic plates 232 are rotatably connected to the cutting rod 22, and the two elastic The plates 232 all move on a plane perpendicular to the axis of the cutting rod 20. When the cutting rod 20 is rotated to receive the pushing assembly 23, one of the two elastic plates 232 will squeeze and compress the elastic body to facilitate smooth rotation and storage. When the groove 21 is rotated to face away from the opening 101, the elastic body 231 will be compressed inside the cutting rod 20 under the action of the elastic plate 232 and the sleeve 10 to facilitate the Insertion and removal of the sleeve 10.

6 and 7, the needle 12 includes a first needle body 121, two second needle bodies 122, and a third needle body 123, the first needle body 121, two second needle bodies The needle body 122 and the third needle body 123 are an integrated structure. The first needle body 121, the second needle body 122, and the third needle body 123 all extend along the axial direction of the sleeve 10, the cross section of the needle 12 is cross-shaped, and the third needle The body 123 is opposite to the tip of the section of the first needle body 121, the sections of the two second needle bodies 122 are adjacent to the section of the first needle body 122, and the sections of the two second needle bodies 122 face the first needle body 122. The cross section of one needle body 121 is inclined, and the cross sections of the two second needle bodies 122 are symmetrical with respect to the cross section of the first needle body 121. The needle 12 adopts a cross-section-like structure, which can effectively improve the fixation stability of the needle 12 after it is inserted into the tendon. The four needle bodies of the needle 12 can prevent the search needle 12 from rotating along its axis, which is beneficial to The opening 101 is aligned with the tendon sheath.

As shown in FIG. 8, the sleeve indicator disk 13 has a first outer indicator arrow 131 and a second outer indicator arrow 132, and the cutting indicator disk 25 has an inner indicator arrow 251. The first outer indicator arrow 131 and the second outer indicator arrow 132 are both located on the side of the sleeve indicator disk 13 away from the sleeve 10, the first outer indicator arrow 131 and the second outer indicator The arrows 132 are arranged oppositely, and the arrows of the first outer indicator arrow 131 and the second outer indicator arrow 132 both point to the axis of the sleeve indicator disk 13. Wherein, the first outer indicator arrow 131 is aligned with the opening 101 along the axial direction of the sleeve 10. The inner indicator arrow 251 is located on the side of the cutting indicator disk 25 away from the cutting rod 20, the inner indicator arrow 251 points to the edge of the cutting indicator disk 25, and the inner indicator arrow 251 runs along the cutting rod 20. The direction of the axis is aligned with the blade 22. By rotating the cutting rod 20 until the inner indicator arrow 251 is aligned with the first outer indicator arrow 131, and the blade 22 and the pushing assembly 23 are aligned with the opening 101, the tenosynovitis surgical device is in the cutting position. State; by rotating the cutting rod 20 until the inner indicating arrow 251 is aligned with the second outer indicating arrow 132, the blade 22 and the pushing assembly 23 are both located inside the sleeve 10, the opening Being blocked from the inside by the cutting rod 20, the tenosynovitis surgical device is in a plug-in state. It is worth noting that other forms of marks may be used on the sleeve indicating plate 13 and the cutting indicating plate 25 to achieve the indicating function.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this document, but should conform to the widest scope consistent with the principles and novel features disclosed in this document.

Claims

A tenosynovitis surgical device for inserting into a tendon to cut the tendon sheath, characterized in that the tenosynovitis surgical device includes an insertion part and a cutting part, and the insertion part includes a sleeve, a fixing part and a needle. The cutting part includes a cutting rod, a blade, and a pushing assembly. The sleeve is hollow, one end of the sleeve is connected with the needle, the fixing member surrounds the needle, and the side of the sleeve has An opening; the cutting rod is a rod-shaped structure, the cutting rod is rotatably located inside the sleeve, the cutting rod side has a groove, the blade is arranged inside the groove, the The pushing assembly is arranged on the side of the cutting rod and is arranged next to the groove, and the pushing assembly is located at the end of the groove away from the needle. The blade and the cutting rod are controlled by rotating the cutting rod. The pushing assembly is aligned with the opening.
The tenosynovitis surgical device according to claim 1, wherein the pushing assembly comprises an elastic body and two elastic plates, the elastic body is storably arranged on the side of the cutting rod, and the elastic body The body is arranged adjacent to the groove, the two elastic plates are respectively arranged on both sides of the elastic body to connect with the elastic body, and the two elastic plates are rotatably connected with the cutting rod.
The tenosynovitis surgical device according to claim 1, characterized in that it comprises a sleeve indicating disc and a cutting indicating disc, the end of the sleeve away from the needle is connected to the sleeve indicating disc, and the sleeve The indicator disc is ring-shaped, the end of the cutting rod away from the needle is connected to the cutting indicator disc, and the cutting indicator disc is in the shape of a disc.
The tenosynovitis surgical device according to claim 3, wherein the sleeve indicator disk has a first outer indicator arrow and a second outer indicator arrow, and the cutting indicator disk has an inner indicator arrow, so The first outer indicator arrow and the second outer indicator arrow are arranged oppositely, the first outer indicator arrow is aligned with the opening along the axis of the sleeve, and the inner indicator arrow is along the cutting rod The axis direction is aligned with the blade.
The tenosynovitis surgical device according to claim 1, characterized by comprising a rotating shaft, and the cutting rod is rotatably connected with the sleeve through the rotating shaft.
The tenosynovitis surgical device according to claim 1, wherein the cross section of the needle is cruciform-like.
The tenosynovitis surgical device according to claim 1, wherein the cross section of the opening is semicircular.
The tenosynovitis surgical device according to claim 1, wherein the cross section of the groove is fan-shaped.