CN110384542A - One kind being exclusively used in twolip stndon sheath part exsector - Google Patents

Abstract

The invention discloses a double-edged tendon sheath partial excision knife, comprising a blade, a first blade, a second blade and a connecting end, the upper end of the blade is symmetrically provided with the first blade and the second blade, and the end of the blade is connected with a connecting end, The working ends of the first blade and the second blade face the head end of the blade, and the blade has an arc groove structure, the structure of the first blade and the second blade are the same, and a mounting groove is arranged on the connecting end. The structure of the present invention is simple, and the original The use of ordinary surgical knife handles only requires one safe, fast and effective removal of part of the tendon sheath, which solves the difficulty of operating in a narrow space many times when using the original surgical blade, and improperly cut the standard transverse incision into a character similar to "ten ten". At the same time, the potential risk of tendon neurovascular injury is eliminated, and medical disputes caused by scar contracture, pain, numbness and limited mobility caused by wrong zigzag incision, and tendon nerve injury and adhesion are avoided.

Description

A special double-edged tendon sheath partial excision knife

technical field

The invention relates to the technical field of hand surgical scalpels, in particular to a double-edged tendon sheath partial excision knife.

Background technique

In the prior art, when removing part of the narrow tendon sheath of the hand, a common scalpel is used to make a transverse incision on the finger skin on the middle surface of the tendon sheath, incise the skin and subcutaneous area to expose the tendon sheath, and then use the scalpel to make a distal and proximal incision respectively. The narrow tendon sheath is incised longitudinally, and then the edge of the incised tendon sheath is clamped with vascular forceps, and the width of the tendon sheath is resected according to the need, and the distal and proximal longitudinal incisions are made once respectively to achieve the purpose of partial tendon sheath resection. Often due to the limited exposure of the small incision, the inexperience of the surgeon’s assistant, and the long blade of the ordinary scalpel, two incisions are made sneakily in the limited field of view, and the skin is also incised while the tendon sheath is incised longitudinally. The horizontal standard incision becomes a "wrong" incision similar to the "ten ten" structure, the two resections are more troublesome, and the operation difficulty increases. At the same time, there are risks of tendon injury, increased adhesion, and accidental injury to the neurovascular bundle caused by longitudinal splitting of the tendon. Post-incision scar pain, even contracture, recurrence of tendon adhesion compression, unsightly wound, and even medical disputes.

Contents of the invention

The purpose of the present invention is in order to solve the deficiency in the background technology, to provide a kind of special double-edged tendon sheath part excision knife.

A double-edged tendon sheath partial excision knife, comprising a blade, a first blade, a second blade and a connecting end, the upper end of the blade is symmetrically provided with the first blade and the second blade, the end of the blade is connected with a connecting end, the first blade and the The working end of the second blade faces the leading end of the blade;

The blade is an arc groove structure;

The first blade and the second blade have the same structure;

The connecting end is provided with a mounting groove;

The blade width A is 7.5-8mm.

The included angle B between the two sides of the blade and the horizontal plane is 8-12°.

The angle F between the first blade and the horizontal plane is between 75° and 85°.

Preferably, the blade width A is 7mm.

Preferably, the included angle B between the two sides of the blade and the horizontal plane is 10°.

Preferably, the distance C between the first cutting edge and the head end of the blade is 3 mm.

Preferably, the distance D between the first cutting edge and the end of the blade is 15 mm.

Preferably, the height E of the first blade is 3mm.

Preferably, the angle F between the first blade and the horizontal plane is 80°.

Preferably, the distance G between the first blade and the second blade is 3 mm.

Preferably, the distance H between the first cutting edge and the edge of the blade is 1mm.

Preferably, the thicknesses of the first blade and the second blade are both 1mm.

Beneficial effects of the present invention:

The invention has a simple structure, and when used with the original ordinary scalpel handle, it only needs one safe, fast and effective excision of part of the tendon sheath, which solves the problem that the original surgical blade needs to be operated in a narrow space for many times, and the standard transverse incision is not appropriate. Cutting into the "wrong" incision problem similar to "ten ten", while eliminating the potential risk of tendon neurovascular injury, avoiding scar contracture, pain, and numbness and limited activity caused by tendon nerve injury and adhesion caused by wrong zigzag incision and other medical disputes.

Description of drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a front view of the present invention.

Figure 3 is a top view of the present invention.

Fig. 4 is a left view of the blade of the present invention.

Detailed ways

Please refer to Figs. 1 to 4, a kind of double-edged tendon sheath partial resection knife includes a blade 1, a first blade 2, a second blade 3 and a connection end 4, and the upper end of the blade 1 is symmetrically provided with a first blade 2 and a blade. The second blade 3, the end of the blade 1 is connected with the connecting end 4, and the working ends of the first blade 2 and the second blade 3 are towards the head end of the blade 1;

The blade 1 is an arc groove structure;

The first blade 2 and the second blade 3 have the same structure;

The connecting end 4 is provided with a mounting groove 5;

The width A of the blade 1 is 7.5-8mm.

The included angle B between both sides of the blade 1 and the horizontal plane is 8-12°.

The angle F between the first blade 2 and the horizontal plane is between 75° and 85°.

Preferably, the width A of the blade 1 is 7mm.

Preferably, the included angle B between the two sides of the blade 1 and the horizontal plane is 10°.

Preferably, the distance C between the first cutting edge 2 and the head end of the blade 1 is 3 mm.

Preferably, the distance D between the first cutting edge 2 and the end of the blade 1 is 15 mm.

Preferably, the height E of the first blade 2 is 3 mm.

Preferably, the angle F between the first blade 2 and the horizontal plane is 80°.

Preferably, the distance G between the first blade 2 and the second blade 3 is 3 mm.

Preferably, the distance H between the first cutting edge 2 and the edge of the blade 1 is 1 mm.

Preferably, the thicknesses of the first blade 2 and the second blade 3 are both 1 mm.

Principle of work of the present invention and use process:

Please refer to shown in Fig. 1 to Fig. 4, during use, at first the mounting groove 5 on the connecting end 4 of the blade 1 is connected with the ordinary scalpel handle, after the connection is completed. Make a transverse incision along the striae on the skin of the finger ahead of the middle surface of the tendon sheath to be incised, incise the skin and subcutaneous tissue with a common scalpel blade, separate and expose the tendon sheath, pull the subcutaneous tissue with retractors or vascular forceps, and separate the subcutaneous tissue with ordinary surgery. The blade transversely incises the part of the tendon sheath directly below the incision for about 8 mm, and then inserts the first end of the blade 1 of the present invention from the incised tendon sheath gap toward the proximal end, inserts it below the tendon sheath, and the superficial surface of the tendon, and pushes it toward the proximal end along the direction of the tendon sheath. The first blade 2 and the second blade 3 will cut off the proximal part of the tendon sheath with a width of about G at the same time according to the needs; On the superficial side, push the distal end along the direction of the tendon sheath, and the first blade 2 and the second blade 3 will simultaneously cut off the distal part of the tendon sheath with a width of about G to complete the operation.

First of all, through a large number of autopsy studies and clinical practice observations of traditional open surgery, it is found that the length of the tendon sheath that usually needs to be cut is generally within 30mm, and the incision along the striae and the first blade 2 and the second The initial cutting position of the blade 3 is basically located in the middle of the sheath, so the distance D between the first blade 2, the second blade 3 and the end of the blade 1 is 15 mm; The distance C between the first blade 2 and the first end of the blade 1 is 3mm, so that after the first end of the blade 1 is inserted into the partially incised tendon sheath, the distance C between the first blade 2 and the first end of the blade 1 is covered by the thickened tendon in the deep part and the uncut tendon in the superficial layer The hypertrophic tendon sheath of the blade is stuck stably so that the incision direction is more controllable. Therefore, the distance C between the first blade 2, the second blade 3 and the head end of the blade 1 is 3mm, and the first blade 2, the second blade 3 and the The distance D between the ends of the blades 1 is 15 mm, that is, the total length of the blades 1 is about 20 mm.

Secondly, considering the good passability of the blade 1 when it is inserted from the tendon sheath gap, the bending resistance required when pushing and cutting, and the feasibility of integrally casting the first blade 2 and the second blade 3, simultaneously in order to prevent the blade from first cutting The blade 2 and the second blade 3 are too thin to have poor cutting effect, difficult to realize the process, and there are residual foreign matter caused by fracture, which may even cause medical disputes. We design the width A of blade 1 to be between 6.5mm and 7.5mm, and the blade is designed as The angle F between the first blade 2 and the second blade 3 and the horizontal plane is between 75° and 85°, the height E is 2.5mm to 3.5mm, the thickness is 1mm, the distance between the first blade 2 and the second blade is 3 The distance H between the blade edges is 1 mm, and the distance G between the first blade 2 and the second blade 3 is 3 mm. And in order to prevent the blade 1 from pushing and cutting the tendon sheath, the friction damages the deep tendon, we design the cross section of the blade 1 as a circular arc groove structure, and the angle B between the two sides of the blade 1 and the horizontal plane is 8-12°. And chamfered the edges.

Finally, because the blade 1 is to be used in connection with the existing common scalpel handle, the size of the installation groove 5 refers to the size of the groove at the distal end of the national standard scalpel handle; at the same time, the knife handle is required to avoid the hindrance of the limbs in the horizontal direction during the blade pushing process. There is a certain included angle with the horizontal plane, combined with the convenience and customary angle of the operator to use other similar surgical instruments, the included angle between the connecting end 4 and the horizontal plane is 50°-70°.

Claims (10)

1. A kind of double-edged tendon sheath partial resection knife is characterized in that: comprise blade (1), the first blade (2), the second blade (3) and connection end (4), blade (1) upper end is arranged symmetrically There are a first blade (2) and a second blade (3), the end of the blade (1) is connected with a connection end (4), and the working ends of the first blade (2) and the second blade (3) face the blade (1) the head end of The blade (1) is an arc groove structure; The first blade (2) and the second blade (3) have the same structure; The connecting end (4) is provided with a mounting groove (5); The width A of the blade (1) is 7.5-8 mm. The included angle B between both sides of the blade (1) and the horizontal plane is 8-12°. The angle F between the first blade (2) and the horizontal plane is between 75° and 85°. 2. A special double-edged tendon sheath partial resection knife according to claim 1, characterized in that: the width A of the blade (1) is 7mm. 3. A special double-edged tendon sheath partial excision knife according to claim 1, characterized in that: the included angle B between both sides of the blade (1) and the horizontal plane is 10°. 4. A double-edged knife for tendon sheath partial excision according to claim 1, characterized in that: the distance C between the first cutting edge (2) and the head end of the blade (1) is 3mm. 5. The double-edged knife for tendon sheath partial excision according to claim 1, characterized in that: the distance D between the first blade (2) and the end of the blade (1) is 15 mm. 6. A double-edged knife for tendon sheath partial excision according to claim 1, characterized in that: the height E of the first blade (2) is 3 mm. 7. The double-edged knife for tendon sheath partial excision according to claim 1, characterized in that: the angle F between the first blade (2) and the horizontal plane is 80°. 8. The double-edged knife for tendon sheath partial excision according to claim 1, characterized in that: the distance G between the first blade (2) and the second blade (3) is 3mm. 9. A double-edged knife for tendon sheath partial resection according to claim 1, characterized in that: the distance H between the first blade (2) and the edge of the blade (1) is 1 mm. 10. The double-edged knife for tendon sheath partial excision according to claim 1, characterized in that the thicknesses of the first blade (2) and the second blade (3) are both 1 mm.