CN209916129U - Tendon sheath incision device for minimally invasive surgery - Google Patents

Abstract

The utility model discloses a tendon sheath incision device for minimally invasive surgery, which comprises a cutter bar, wherein one end of the cutter bar is provided with a handle, one end of the cutter bar, which is far away from the handle, is provided with a flat cutter head, the middle part of the cutter bar is provided with a bending part, the cutting edge of the cutter head is arranged into an arc-shaped cutting edge which is convex outwards, one end of the cutter bar, which is close to the cutter head, extends forwards and is provided with a positioning column with a smooth surface, the positioning column is positioned below the cutter head and is clung to the; the side wall of the cutter bar close to one end of the cutter head is also provided with a sawtooth section. The utility model has the advantages of it is following and effect: the adoption of the bent cutter bar can prevent the deviation of the cutter blade during operation, and is easy for medical personnel to hold and operate; the arc-shaped cutting edge has more contact area with the tendon sheath in the cutting process, so that the cutting effect is better; the positioning column extending out of the cutter head is arranged at the front end of the cutter bar, so that the cutter head is not easy to slide off the tendon sheath in the forward pushing process, and the success rate is high; the saw tooth section is arranged, so that ultrasonic development is more obvious, and observation is facilitated.

Description

Tendon sheath incision device for minimally invasive surgery

Technical Field

The utility model relates to the field of medical equipment, in particular to a tendon sheath incision device for minimally invasive surgery.

Background

The tendon sheaths have the function of maintaining normal flexion and extension of the fingers and tendon slippage. Tenosynovitis is a common clinical disease, and is mainly caused by trauma or repeated friction of tendons, which causes exudation and hyperplasia of the inner layer of the tendon sheath, adhesion of fibers of severe patients, even formation of fibrocartilage, and change into a ribbon-shaped narrow fibrocartilage ring, which affects the normal activity of the tendons, even the tendon can not slide in the tendon sheath. The traditional treatment method mainly adopts open surgery or adopts a manner that an incision device only provided with a flat cutter head at the head of a columnar holding rod cuts narrow tendon sheaths through skin to make the hand function recover freely, but the traditional treatment method has the following defects: the operation in-process can't fix a position the tool bit of head well, and the tool bit easily slides off the tendon sheath in cutting process, has the relatively poor problem of location nature.

The current chinese patent with publication number CN202397558U discloses a special surgical needle knife for stenosing tenosynovitis, which comprises a handle, a knife rod, wherein the front end of the knife rod is provided with a knife tip, the middle part of the knife rod is bent to form a bent part, one side of the knife rod close to the knife tip is provided with a blade perpendicular to the knife rod, the blade is triangular, the front and the back sides of the blade are respectively provided with a front side blade edge and a back side blade edge, the front side blade edge and the knife rod are at 45 degrees included angles, and the back side blade edge is perpendicular to the knife rod and is in a straight line shape. When at the tendon sheath cutting in-process, because the relative cutter arbor of blade sets up perpendicularly and is equipped with the rear side cutting edge on the blade, cut the peripheral tendon of tendon sheath when the cutter arbor is being pulled back easily and cause the damage, there is the lower problem of security, in addition, the blade of front side cutting edge is the straight line form, and is less with tendon sheath cutting area of contact, has the relatively poor problem of cutting effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a tendon sheath opens ware for minimal access surgery adopts and sets up reference column and sawtooth section at the cutter arbor head, has the higher effect of the location of being convenient for, security, and in addition, the tool bit adopts the arc blade, and cutting effect is better.

The above technical purpose of the present invention can be achieved by the following technical solutions: a tendon sheath incision device for minimally invasive surgery comprises a cutter bar, wherein a handle is arranged at one end of the cutter bar, a flat cutter head is arranged at one end, far away from the handle, of the cutter bar, a bent part is arranged in the middle of the cutter bar, a cutting edge of the cutter head is an arc-shaped cutting edge protruding outwards, a positioning column with a smooth surface is arranged at one end, close to the cutter head, of the cutter bar in a forward extending mode, the positioning column is located below the cutter head and clings to the cutter head, and the front end of the; the side wall of the cutter bar close to one end of the cutter head is also provided with a sawtooth section.

By adopting the technical scheme, in the operation process, medical care personnel strictly disinfect the skin of an operation area and then open a tiny wound for the cutter bar to stretch into, and repeatedly wipe the ultrasonic probe with alcohol for disinfection and then place the ultrasonic probe on the surface of the skin of an affected part. Medical personnel hold on the handle, penetrate the tool bit and reference column and create the mouth in, support tightly with the tendon sheath inner wall as the reference column lateral wall, and the arc blade supports when the tendon sheath tip, promotes the cutter arbor forward along the tendon sheath axial, so can cut the tendon sheath, owing to support in the tendon sheath inner wall all the time at cutting in-process reference column lateral wall, the tool bit promotes the in-process forward and is difficult for sliding off the tendon sheath to guarantee the success rate of operation. In addition, combine ultrasonic development in the operation process and can pinpoint the tool bit position, add the sawtooth section and can make the supersound reflection obvious, be favorable to observing the whole position of tool bit and judging whether the cutting targets in place when ultrasonic development, so, the tool bit location is more convenient, the security is higher. In addition, the tool bit adopts the arc blade can make the cutting edge more with the area of contact of tendon sheath in cutting process, and cutting effect is better, is difficult for causing the injury to other tissues of inside at the pull-back in-process.

The utility model discloses a further set up to: the bending angle range of the bending part is set to be 120-170 degrees.

Through adopting above-mentioned technical scheme, the kink of cutter arbor is certain angle and buckles the back, can prevent to a certain extent that the skew phenomenon from appearing in the operation in-process tool bit, so change in medical personnel grip and operate.

The utility model discloses a further set up to: the positioning column is a hollow cylinder with a pointed front end.

Through adopting above-mentioned technical scheme, when the tool bit cutting inserted the tendon sheath, because the front end of reference column is the tip, so be convenient for pierce through the tendon sheath.

The utility model discloses a further set up to: the length of the front end of the positioning column extending out of the cutter head is 2-3 mm.

Through adopting above-mentioned technical scheme, the reference column stretches out the length of tool bit if the overlength, easily touches internal tissue such as nerve, muscle in cutting process, and the reference column stretches out the length of tool bit if the overlength is short, then location effect in cutting process is relatively poor, and the tool bit easily slides off the tendon sheath on certain probability, and then weaves into the damage to internal group.

The utility model discloses a further set up to: the length of the sawtooth section is set to 1 cm.

By adopting the technical scheme, in the ultrasonic development process, if the length of the sawtooth section is too short, the phenomenon of unobvious development can occur, if the length of the sawtooth section is too long, on one hand, the processing is troublesome, and on the other hand, the cutter bar provided with the sawtooth section is relatively thin and is easy to break.

The utility model discloses a further set up to: the handle is provided with anti-skid lines.

Through adopting above-mentioned technical scheme, medical personnel hold and promote the cutter arbor forward on the handle at the operation in-process, and anti-skidding line can play skid-proof effect to a certain extent, avoids weaving into unnecessary damage to inside group.

To sum up, the utility model discloses following beneficial effect has:

1. the cutter bar with the bent part is adopted, so that the deviation of the blade in the operation process can be prevented to a certain extent, and the anti-skid lines on the handle can play an anti-skid role, so that the cutter bar is easier to hold and operate by medical personnel;

2. the arc-shaped cutting edge is adopted, so that the contact area of the cutting edge and the tendon sheath is large in the cutting process, and the cutting effect is better;

3. the positioning column extending out of the cutter head is arranged at the front end of the cutter bar, so that the cutter head is not easy to slide away from the tendon sheath in the forward pushing process, and the success rate of operation is ensured;

4. the adoption sets up the mode of sawtooth section at the cutter arbor lateral wall, can make ultrasonic development more obvious, is favorable to observing the whole position of tool bit and judging whether the cutting is in place.

Drawings

Fig. 1 is a schematic diagram of the overall structural relationship of the embodiment.

Fig. 2 is an enlarged view of the area a in fig. 1.

In the figure: 1. a cutter bar; 2. a handle; 3. anti-skid lines; 4. a cutter head; 5. an arc-shaped cutting edge; 6. a bending section; 7. a positioning column; 8. a serrated section.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. For convenience of explanation, the following "up" and "down" are all in the same direction as shown in fig. 1.

A tendon sheath incision device for minimally invasive surgery is disclosed, as shown in fig. 1 and fig. 2, and comprises a cutter bar 1, wherein one end of the cutter bar 1 is provided with a handle 2, the handle 2 is provided with anti-skid lines 3, one end of the cutter bar 1, which is far away from the handle 2, is provided with a cutter head 4, the cutter head 4 is arranged in a flat shape in the vertical direction, a cutting edge of the cutter head 4 is arranged to be an arc-shaped cutting edge 5 which protrudes outwards, and the middle part of the cutter bar 1 is provided with a bent part 6, in the embodiment, the bending angle of the bent part 6 is set to be 160 degrees, and after the bent part 6 of the cutter bar 1 is bent at 160 degrees, the cutter head 4 can be prevented from deviating; the front end of the cutter bar 1 extends forwards to be provided with a positioning column 7 with a smooth surface, the positioning column 7 is a hollow cylinder with a pointed front end, the positioning column 7 is positioned below the cutter head 4, the side wall of the positioning column 7 is tightly attached to the cutter head 4, the length of the positioning column 7 extending out of the cutter head 4 is 3mm, if the length of the positioning column 7 extending out of the cutter head 4 is too long, internal tissues such as nerves, muscles and the like are easily touched in the cutting process, if the length of the positioning column 7 extending out of the cutter head 4 is too short, the positioning effect in the cutting process is poor, the cutter head 4 is easy to slide away from a tendon sheath at a certain probability, and further damage; one section sawtooth section 8 has still been seted up on the last lateral wall that is close to 4 one ends of tool bit on the cutter arbor 1, and the length of sawtooth section 8 sets up to 1cm, and in the ultrasonic development in-process, if 8 length short then can appear developing unobvious phenomenon, if 8 length overlengths of sawtooth section, it is more troublesome to process on the one hand, and on the other hand is equipped with cutter arbor 1 of sawtooth section 8 and is thinner relatively, the easy rupture.

The utility model discloses a basic operating principle does: in the process of cutting the tendon sheath in the minimally invasive surgery, medical staff strictly disinfect the skin of an operation area by alcohol, then open a tiny wound for the knife bar 1 to extend into, and repeatedly wipe and disinfect an ultrasonic probe by alcohol and then place the ultrasonic probe on the surface of the skin of an affected part. Medical personnel hold on handle 2, penetrate the wound with tool bit 4 and reference column 7 in, the front end has reference column 7 of point form to pierce through the tendon sheath earlier, it is tight to offset with the tendon sheath inner wall when 7 lateral walls of reference column, and arc blade 5 supports when the tendon sheath tip, promote cutter arbor 1 forward along the tendon sheath axial, so can cut the tendon sheath, medical personnel hold and promote cutter arbor 1 forward on handle 2, anti-skidding line 3 can play skid-proof effect to a certain extent, avoid tool bit 4 crooked to weave into the unnecessary damage to inside group. Because the side wall of the positioning column 7 always supports against the inner wall of the tendon sheath in the cutting process, the cutter head 4 is not easy to slide away from the tendon sheath in the forward pushing process, and therefore the high success rate in the operation process can be guaranteed. In addition, combine ultrasonic development in the operation process and can pinpoint the position of tool bit 4, add sawtooth section 8 and can make the supersound reflection obvious, be favorable to observing the whole position of tool bit 4 and judging whether the cutting targets in place when ultrasonic development, so, tool bit 4 location is more convenient, the security is higher. In addition, tool bit 4 adopts arc blade 5 can make the cutting edge more with the area of contact of tendon sheath in cutting process, and cutting effect is better, is difficult for causing the injury to other tissues of inside at the pull-back in-process.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims (6)

1. The utility model provides a tendon sheath opens ware for minimal access surgery, includes cutter arbor (1), the one end of cutter arbor (1) is provided with handle (2), keep away from on cutter arbor (1) the one end of handle (2) is provided with tool bit (4) of platykurtic, cutter arbor (1) middle part is provided with kink (6), its characterized in that: the cutting edge of the cutter head (4) is an arc-shaped cutting edge (5) protruding outwards, one end, close to the cutter head (4), of the cutter bar (1) extends forwards to be provided with a positioning column (7) with a smooth surface, the positioning column (7) is located below the cutter head (4) and is tightly attached to the cutter head (4), and the front end of the positioning column (7) extends out of the cutter head (4); and a sawtooth section (8) is also arranged on the side wall of the cutter bar (1) close to one end of the cutter head (4).

2. A tenotomy device for minimally invasive surgery according to claim 1, characterized in that: the bending angle range of the bending part (6) is set to be 120-170 degrees.

3. A tenotomy device for minimally invasive surgery according to claim 1, characterized in that: the positioning column (7) is a hollow cylinder with a pointed front end.

4. A tenotomy device for minimally invasive surgery according to claim 1, characterized in that: the length of the front end of the positioning column (7) extending out of the cutter head (4) is 2-3 mm.

5. A tenotomy device for minimally invasive surgery according to claim 1, characterized in that: the length of the sawtooth section (8) is set to be 1 cm.

6. A tenotomy device for minimally invasive surgery according to claim 1, characterized in that: the handle (2) is provided with anti-skid lines (3).

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