CN209899521U

CN209899521U - Scalpel blade and scalpel for extremity tendon sheath loosening operation

Info

Publication number: CN209899521U
Application number: CN201920296467.3U
Authority: CN
Inventors: 汪飞; 唐凯; 倪磊
Original assignee: Nanjing Childrens Hospital of Nanjing Medical University
Current assignee: Nanjing Childrens Hospital of Nanjing Medical University
Priority date: 2019-03-09
Filing date: 2019-03-09
Publication date: 2020-01-07
Anticipated expiration: 2029-03-09

Abstract

The utility model relates to a surgical blade, by sword tail, back of a knife blade, preceding sword, lower blade, sword abdomen and mounting hole constitution, preceding sword is straight shape, and the lower blade is the arc, and preceding sword links to each other with the lower blade and is the acute angle. When the tendon sheaths of hands and feet are loosened, the tendon sheaths need to be pushed forward and pulled back to achieve the purpose of loosening. The utility model relates to a scalpel blade shape can realize above-mentioned two kinds of cutting effects simultaneously, very big improvement the efficiency of operation process. Simultaneously, because the utility model relates to a cutting edge scope is limited, avoids the operation process to cut skin, has guaranteed the security of operation process of loosening. The utility model relates to an exquisiteness, convenient to use has wide application prospect.

Description

Scalpel blade and scalpel for extremity tendon sheath loosening operation

Technical Field

The utility model relates to a scalpel blade, concretely relates to scalpel blade for achilles tendon sheath lysis belongs to medical instrument technical field.

Background

Stenosing tenosynovitis is one of the common hand and foot diseases of children, and most of children still need to be treated by an operation method at present due to limited conservative treatment effect. The current common operation in clinic is tenosynovium lysis. The problem of tendon entrapment is alleviated by longitudinal relaxation of the tendon sheaths during the procedure. When the tendon sheaths are loosened, the tense tendon sheaths can be cut off by using small scissors or directly cut off by using a sharp blade; when the small scissors are used for cutting a narrow part, the narrow part is often difficult to pass through, and the currently used sharp blade cannot safely carry out forward pushing and backward pulling cutting actions and is easy to cut the skin edge of an operation incision by mistake. Therefore, it is necessary to design a special scalpel blade for tenosynovectomy.

Disclosure of Invention

The utility model discloses just to the problem that exists among the prior art, provide a surgical blade for brothers' tendon sheath art of loosening, this technical scheme simple structure, use simple to operate because there is not preceding sword in the current blade, perhaps preceding sword design is unreasonable, pushes away before pushing away or can not realize safety in the in-process of the actual operation before being convenient for, causes the secondary damage for the patient, and this technical scheme asks ingenious solution above-mentioned technical problem.

In order to achieve the purpose, the technical scheme of the utility model is as follows, a surgical blade for the loosening operation of the tendon sheaths of hands and feet, the blade comprises a blade tail, a blade back, a front edge, a lower edge, a blade abdomen and a mounting component, wherein the front edge is positioned at the forefront of the blade and is straight, the front edge is connected with the blade back by an obtuse angle, the front edge is connected with the lower edge by an acute angle, and the lower edge extends to the blade abdomen in an arc shape; whole technical scheme compact structure is ingenious, and this scheme can be very convenient carry on push forward and pull back the cutting action and realize that the tendon sheath is pine, has improved the efficiency of operation, has guaranteed the safety of operation incision skin reason simultaneously.

As an improvement of the utility model, the front blade and the lower blade are both provided with the sharpening blades, and the blade depth is 1.0-2.5mm, preferably 1.5 mm; the knife back, the knife belly and the knife tail are not edged. Because the back of the knife is not edged, the skin edge of the incision can not be cut by mistake when the forward cutting is carried out. Compared with the conventional surgical blade, the anti-picking operation of the scalpel can be avoided, the skin edge can be avoided being cut, and the efficiency and the safety are improved.

As an improvement of the utility model, the knife belly is positioned below the knife back and at the front part of the knife tail, and forms an included angle of 10-25 degrees with the knife back, and the included angle is preferably 12 degrees; the knife tail is positioned behind the knife back and the knife belly, and the included angle of the joint of the knife tail and the knife back is an obtuse angle which is generally 100-140 degrees, and is preferably 115 degrees.

As an improvement of the utility model, the preceding sword is the acute angle with the lower blade and links to each other, and the lower blade is the arc, and arc length 4.5-8.5. mm, arc length are preferably 6.4mm, and the arc radius is 5 mm-15 mm generally, and is preferably 8.2mm, and the angle is generally 30-60, preferably 45, and the arc lower blade extends to the sword belly.

As an improvement of the utility model, the included angle between the front edge and the back of the knife blade is 110 degrees to 150 degrees, preferably 135 degrees, and the length of the front edge 3 is generally 1.5mm to 6mm, preferably 2.2 mm.

As an improvement of the utility model, the middle part of the knife tail is set as a mounting component 6, the mounting component is set as a mounting hole or a mounting buckle or other mounting structures, and is convenient to assemble with the scalpel handle through the mounting component.

As an improvement of the utility model, the surgical knife blade is made of stainless steel.

As an improvement of the utility model, the scalpel includes blade and handle of a knife, the blade passes through installation component and handle of a knife fixed connection.

As an improvement of the utility model, be provided with the antislip strip on the handle of a knife, avoid the landing of operation in-process scalpel, further improve the security and the high efficiency of operation, the antislip strip is located the one end of handle of a knife, the quantity of antislip strip is one at least.

Compared with the prior art, the utility model has the advantages that 1) the blade of the technical proposal is provided with the front blade which is provided with the edging, so that the safe forward cutting can be conveniently realized without taking the scalpel reversely in the actual operation process, thereby improving the operation efficiency; 2) according to the technical scheme, the knife belly and the knife back are not edged, and the knife back is not edged, so that the skin edge of the surgical incision cannot be mistakenly cut when the knife back is pushed forward for cutting. Compared with the conventional surgical blade, the anti-picking operation of the scalpel can be avoided, the skin edge can be avoided being cut, the possibility of iatrogenic injury is reduced, and the safety is improved; 3) according to the technical scheme, the lower blade has a radian and extends to the abdomen in an arc shape, when the lower blade is inserted into an operation incision to pull back, cut and loosen the tendon sheath, the lower blade is in the arc shape, so that the pull-back cutting action can be conveniently carried out under the condition of keeping the pen-holding and knife-holding posture, the back of the knife does not need to be erected too much, the space required by the action is less compared with a conventional blade, the length required by the operation incision can be reduced, and the minimally invasive degree is improved; 4) the handle of the scalpel is provided with the anti-slip strip, so that the scalpel is prevented from slipping off in the operation process, and the safety and the efficiency of the operation are further improved; 5) the utility model relates to an exquisiteness, convenient to use, the cost is lower, has wide application prospect.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a graph of local parameters of a surgical blade in millimeters (mm) in length and degrees (°) in angle;

fig. 3 is a schematic view of the forward pushing and cutting structure of the present invention.

Fig. 4 is a schematic view of the pull-back cutting structure of the present invention.

In the figure: 1. the knife comprises a knife tail, 2 parts of a knife back, 3 parts of a front blade, 4 parts of a lower blade, 5 parts of a knife web, 6 parts of a mounting hole, 7 parts of a handle, 8 parts of an anti-slip strip.

The specific implementation mode is as follows:

for the purpose of enhancing the understanding of the present invention, the following detailed description is made with reference to the accompanying drawings.

Example 1: referring to fig. 1-4, the surgical blade for the hand and foot tendon sheath loosening operation comprises a blade tail 1, a blade back 2, a front edge 3, a lower edge 4, a blade abdomen 5 and a mounting assembly 6, wherein the front edge 3 is positioned at the forefront of the blade and is straight, the front edge 3 is connected with the blade back 2 at an obtuse angle, the front edge 3 is connected with the lower edge 4 at an acute angle, and the lower edge extends to the blade abdomen in an arc shape; whole technical scheme compact structure is ingenious, and this scheme can be very convenient carry on push forward and pull back the cutting action and realize that the tendon sheath is pine, has improved the efficiency of operation, has guaranteed the safety of operation incision skin reason simultaneously.

Example 2: referring to fig. 1-4, as a modification of the present invention, the front blade 3 and the lower blade 4 have a cutting edge, and the cutting edge depth is 1.0-2.5mm, preferably 1.5 mm; the knife back 2, the knife belly 5 and the knife tail 1 are not edged. Because the back of the knife is not edged, the skin edge of the incision can not be cut by mistake when the forward cutting is carried out. Compared with the conventional surgical blade, the anti-picking operation of the scalpel can be avoided, the skin edge can be avoided being cut, and the efficiency and the safety are improved. The rest of the structure and advantages are exactly the same as those of embodiment 1.

Example 3: referring to fig. 1-4, as a modification of the present invention, the knife belly 5 is located below the knife back 2 and in front of the knife tail 1, and forms an angle of 10-25 ° with the knife back 2, and the angle is preferably 12 °; the knife tail 1 is positioned behind the knife back 2 and the knife belly 5, and the included angle of the connection part of the knife tail 1 and the knife back 2 is an obtuse angle, generally 100-140 degrees, and preferably 115 degrees. The included angle is an ideal design scheme, and the operation is safe and convenient. The rest of the structure and advantages are exactly the same as those of embodiment 1.

Example 4: referring to fig. 1-4, as an improvement of the present invention, the front edge 3 is connected to the lower edge 4 at an acute angle, the lower edge is arc-shaped, the arc length is 4.5-8.5. mm, the arc length is preferably 6.4mm, the arc radius is generally 5-15 mm, preferably 8.2mm, the angle is generally 30-60 °, preferably 45 °, the arc lower edge 4 extends to the blade web 5, the front edge forms an angle with the blade back of the knife of 110-150 °, preferably 135 °, and the length of the front edge 3 is generally 1.5-6 mm, preferably 2.2 mm. The included angle is an ideal design scheme, and the operation is safe and convenient. The rest of the structure and advantages are exactly the same as those of embodiment 1.

Example 5: referring to fig. 1-4, as an improvement of the present invention, the middle portion of the knife tail is provided with a mounting assembly 6, the mounting assembly is provided with a mounting hole or a mounting buckle or other mounting structure, and is convenient to assemble with the scalpel handle through the mounting assembly, and the scalpel blade is made of stainless steel. The rest of the structure and advantages are exactly the same as those of embodiment 1.

Example 6: referring to fig. 1-4, a scalpel comprises a blade and a handle, the blade is fixedly connected with the handle through a mounting hole or a mounting buckle or other mounting structure, the blade adopts any one or combination of several of the above embodiments, the handle is provided with an anti-slip strip 8, the slipping of the scalpel in the operation process is avoided, the safety and efficiency of the operation are further improved, the anti-slip strip is located at one end of the handle, the number of the anti-slip strip is at least one, and 2-6 strips are generally arranged according to the actual situation.

The working process is as follows: referring to fig. 1-4, the solution is exemplified in the use process, the blade can be put into use after being assembled on the handle 7; when the tendon sheath is loosened by inserting into the incision of the operation, the forward pushing and cutting action can be carried out on the premise of not changing the direction of the knife holder and keeping the pen-holding posture, so that the deep loosening is realized, and the operation efficiency is improved. Meanwhile, the knife back is not edged, so that the skin edge of the incision can not be cut by mistake when the knife back is pushed forward for cutting. Compared with the conventional scalpel blade, the safety of the operation is improved.

As shown in the use process example of the invention shown in the attached figure 3, the blade of the invention can be put into use after being assembled on the handle 7; when the tendon sheath is stretched into the incision for operation and pulled back, the lower blade is arc-shaped, so that the pull-back cutting action can be conveniently carried out by keeping the pen-holding and knife-holding posture. Compared with the conventional blade, the space required for realizing the action is less, the length required by the operation incision can be reduced, and the minimally invasive degree is improved.

The utility model discloses can also form new implementation mode with embodiment 1 combination with at least one in

embodiment

2, 3, 4, 5 among the technical characterstic.

It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and all equivalent changes and substitutions made on the basis of the above-mentioned technical solutions are within the scope of the present invention as defined in the claims.

Claims

1. The utility model provides an operating blade for brothers' tendon sheath art of debonding, a serial communication port, the blade comprises sword tail, back of a knife blade, preceding sword, lower sword, sword belly and installation component, preceding sword is located the most place ahead of blade and is straight, be connected for the obtuse angle between preceding sword and the back of a knife blade, preceding sword is the acute angle with the lower sword and links to each other, and the lower sword is the arc and extends to the sword belly.

2. The surgical blade for the release of the tendon sheaths of the hands and feet according to claim 1, wherein the front edge and the lower edge are both provided with cutting edges with a depth of 1.0-2.5mm, and the back, the abdomen and the tail are not provided with cutting edges.

3. The surgical blade for the release of the tendon sheaths of the hands and the feet according to claim 2, wherein the knife abdomen is positioned below the knife back and at the front part of the knife tail, the knife tail is positioned behind the knife back and the knife abdomen, and an included angle formed at the joint of the knife tail and the knife back is an obtuse angle.

4. The surgical blade for the release of the tendon sheaths of the hands and feet according to claim 2 or 3, wherein the front edge is connected with the lower edge at an acute angle, the lower edge is arc-shaped, the arc length is 4.5-8.5. mm, and the arc-shaped lower edge extends to the abdomen of the knife.

5. The surgical blade for the release of the sheaths of the extremities and the tendons of claim 4, wherein the angle between the front edge and the back of the knife is 110 ° to 150 °.

6. The surgical blade for the release of the tendon sheaths of the hands and feet according to claim 5, wherein the middle part of the knife tail is provided with a mounting component which is provided with a mounting hole or a mounting buckle.

7. The surgical blade for the release of the sheaths of the hands and feet according to claim 6, wherein said surgical blade is made of stainless steel.

8. Scalpel provided with a blade according to any one of claims 1 to 7, comprising a blade and a handle, the blade being fixedly connected to the handle by a mounting assembly.

9. The scalpel of claim 8, wherein the handle tail is provided with a slip resistant strip.

10. The scalpel of claim 9, wherein the anti-slip strip is located at one end of the handle, the number of the anti-slip strip being at least one.