CN104146746B - A kind of double end scalpel with protective sleeve - Google Patents

Abstract

The invention relates to a double-headed scalpel with a protective sheath, comprising a handle, a first blade, a second blade and two sheaths, the first blade and the second blade are respectively installed at two ends of the handle; the sheath includes a pin Rod, the first guard, the second guard, the first shrapnel and the second shrapnel; there is a pin hole on the back of the knife, the pin rod is in the pin hole, and the pin rod and the pin hole are in close contact and fit; the first shrapnel, the second shrapnel The inner ends of the pins are respectively connected to the upper part of the pin; the upper parts of the first guard piece and the second guard plate are respectively connected with the outer ends of the first elastic piece and the second elastic piece, and the lower ends of the first protective piece and the second protective piece are provided with towards the blunt part of the blade. Due to the setting of two blades, it is suitable for the needs of various tissue cutting and avoids the delay of the operation; the safety problem of the double-ended blade is solved by setting the sheath to protect the blade; the blunt ends of the first guard and the second guard The upper part constitutes a blocking surface to limit the depth of the knife, making the operation more precise, reducing the pain of the patient, and making it safer and more reliable.

Description

A double-ended scalpel with a protective sheath

technical field

The invention relates to a surgical knife, in particular to a double-headed surgical knife with a protective cover.

Background technique

Scalpel is a surgical instrument commonly used in surgery and internal medicine. Any operation must use a scalpel. It can be seen that a scalpel is a necessary condition for surgery and is quite important.

Due to the relatively single function of the scalpel, there has been no major reform in structure. Present scalpel generally comprises handle of a knife and blade, and blade is arranged on an end of handle of a knife, and during operation, doctor holds handle of a knife with hand, cuts with blade the periphery of diseased part on the patient's body. Removing the tissue of the diseased part, or cutting out some tissue samples for testing and analysis, so as to finally achieve the purpose of recovering the patient, is also the most effective and direct way of treating diseases.

Above-mentioned scalpel is owing to only having installed the blade of a kind of specification, therefore, this scalpel can only be suitable for the cutting of certain tissue.

However, during clinical operations, patients may suffer from multiple diseases, and sometimes a diseased site also involves multiple tissues. In this case, multiple surgical knives with different specifications must be equipped for cutting different tissues.

However, often due to underestimation of the condition, or sometimes negligence, the types of scalpels equipped are not complete. In this way, when a certain tissue is to be cut, it is found that no suitable scalpel can be found, and it is necessary to ask the nurse to re-equip it urgently. However, this still takes a certain amount of time, causing delays in surgery and adding unnecessary pain to patients.

In addition, the current scalpel does not have a limit structure to control the depth of the blade. The depth of the knife depends on the doctor's experience and technique. It is difficult to accurately control the depth, and the blade is often too shallow or too deep. During the operation, if the blade is too shallow, the cutting purpose or cutting effect will not be achieved, and the knife needs to be re-entered and re-cut, which will increase unnecessary pain to the patient; while the blade is too deep, it will cause harm to the patient, and also increase unnecessary pain to the patient. pain. Therefore, the current scalpel also has the defect that it is not safe and reliable enough, which is also a technical problem that has been expected to be solved all the time.

Contents of the invention

The technical problem to be solved by the present invention is to provide a double-ended scalpel with a protective cover, which is suitable for various tissue cutting needs, and is easy to operate, safer and more reliable. The technical scheme adopted is as follows:

A double-headed scalpel with a protective sheath, comprising a handle and a first blade, the first blade is installed at one end of the handle, and is characterized in that it also includes a second blade and two sheaths, the second blade is installed on the The other end of the knife handle, the first blade and the second blade all include a blade and a knife back; two sheaths are installed on the first blade and the second blade respectively, and the size and outline of the two sheaths are respectively the same as those of the first blade. The blade and the second blade are matched; the sheath includes at least one pin rod, a first guard plate, a second guard plate, a first elastic piece and a second elastic plate; the knife back is provided with at least one pin hole, and the pin bar is in the pin hole, The pin rod is in close contact with the pin hole; the inner ends of the first shrapnel and the second shrapnel are respectively connected to the upper part of the pin rod; The upper part of the shield is connected with the outer ends of the first shrapnel and the second shrapnel respectively, and the lower ends of the first shrapnel and the second shrapnel are provided with a blunt portion towards the blade; the lengths of the first shrapnel and the second shrapnel are greater than that of the first shrapnel The distance between the upper end of the first guard and the second guard and the pin rod.

By setting the first blade and the second blade on the knife handle respectively, and the first blade and the second blade adopt blades of different specifications, such a scalpel can be suitable for various tissue cutting needs, and will not be lost because of missing A suitable scalpel causes delays in surgery; in order to solve the safety problems caused by setting the first blade and the second blade at both ends of the knife handle respectively, a sheath is respectively set on the first blade and the second blade; the sheath adopts The structure of the pin rod, the first guard piece, the second guard plate, the first spring piece and the second spring piece cooperates with the pin hole on the back of the knife. Under normal conditions, under the action of the first spring piece and the second spring piece, the first guard The lower ends of the first protective piece and the second protective piece are clamped to the middle to seal the blade, that is, the blade is wrapped in the middle of the first protective piece and the second protective piece. Press the upper ends of the first and second guards, squeeze the first and second elastics, and the lower ends of the first and second guards will open outwards. ) Pull the first guard and the second guard (or pull the pin rod), the first guard and the second guard will move from the blade to the back of the knife and at the same time drive the pin to move upward. When the blade is exposed, remove the first guard 1. The pressing force of the upper end of the second guard plate, under the action of the first elastic piece and the second elastic plate, the lower ends of the first guard plate and the second guard plate are clamped to each other in the middle and are clamped on the blade. At this time, due to the first The first guard and the second guard are clamped on the blade in the middle to form the positioning of the first guard and the second guard. The first guard and the second guard will not slide up and down easily, and will not affect the operation Similarly, when you want to close the blade, press the upper end of the first guard and the second guard, and then push the first guard and the second guard (or the pin) from the back of the knife to the blade until The pressing force on the upper end of the first guard and the second guard is removed only after the first guard and the second guard completely seal the blade, and the sealing and exposure of the blade can be realized only by gently pressing and pulling (pushing), which solves the problem The safety problem of the double-ended blade is solved, and the operation is convenient; since the lower ends of the first guard and the second guard are provided with blunt parts facing the blade, and because the first shrapnel and the second shrapnel are facing toward the blade when the blade is exposed, The first guard and the second guard will not slide up and down easily. Therefore, the blunt part of the lower end of the first guard and the second guard forms a relatively smooth blocking surface, which limits the exposure of the blade. The size of the knife also limits the depth of the knife, avoiding the situation of too shallow or too deep, the operation is more accurate, the pain of the patient is reduced, and it is safer and more reliable. In addition, by pressing the upper end of the first guard and the second guard, The positions of the first guard and the second guard can be adjusted at any time, that is, the position of the blocking surface can be adjusted, and the depth of the knife can be adjusted at any time according to the needs of the operation.

As a preferred solution of the present invention, the upper ends of the first protection sheet and the second protection sheet are further provided with pressing pieces. By arranging the pressure piece on the upper end of the first protection piece and the second protection piece, when the blade is to be closed or the blade is exposed, as long as the pressure piece is gently pressed by hand, the first protection piece and the second protection piece are opened to make the second protection piece The lower ends of the first guard and the second guard leave the first blade (second blade), and then the other hand gently pushes the pin rod, so that the opening or closing of the sheath (that is, the up and down movement of the sheath) becomes Quite easy, further enhancing the safety performance.

As a further preferred solution of the present invention, the orientations of the first blade and the second blade are opposite. The setting of the first blade and the second blade facing oppositely makes the second blade face upward when the first blade is operated downwards, preventing the blade of the second blade from being damaged when the sheath of the second blade does not close the blade. It is safer and more reliable to scratch the doctor's hand.

As a further preferred solution of the present invention, both the first protection sheet and the second protection sheet are plastic sheets. Both the first protective sheet and the second protective sheet are made of plastic sheets, which are lighter in weight and more suitable for surgical operations, and the cost of the plastic sheets is also lower, and the production is easier.

As a further preferred solution of the present invention, both the first elastic piece and the second elastic piece are metal elastic pieces or plastic elastic pieces. When the first elastic piece and the second elastic piece are both plastic elastic pieces, the first elastic piece can be integrally formed with the first guard piece, and the second elastic piece can also be integrally formed with the second guard piece, so as long as the first elastic piece, the second elastic piece It only needs to be connected with the pin rod at the inner end, the structure is stronger, and the production process is simpler, which further saves the production cost.

As a further preferred solution of the present invention, the sections of the first protection sheet and the second protection sheet are both arc-shaped, and both the first protection sheet and the second protection sheet are bent outward. The cross-sections of the first guard and the second guard are all set to be arc-shaped, and bend outwards, so that the first guard and the second guard have certain elasticity, and the lower ends of the first guard and the second guard will move toward the Internal clamping, clamping each other or clamping on the blade, not easy to slide, better stability.

As a further preferred solution of the present invention, the number of the pin rods is two, and the number of pin holes opened on the blade back is two. Set up two pins and two pin holes, the two pins guide and limit each other, avoid the rotation of the pins and cause the distortion of the first guard and the second guard, and at the same time control the front end of the sheath well Simultaneously raise and lower with the rear end.

As a further preferred solution of the present invention, the upper ends of the two pin rods are connected together by a connecting strip. The upper ends of the two pins are connected together by a connecting bar, which further strengthens the structure. As long as the connecting bar is lifted or pushed, the two pins can be lifted and lowered at the same time, and the opening or closing of the sheath is easier.

Compared with the prior art, the present invention has the following advantages:

By setting the first blade and the second blade on the handle respectively, such a scalpel can be applied to the needs of various tissue cutting, avoiding the delay of operation; Pulling (push) can realize the closure and exposure of the blade, which not only solves the safety problem of the double-ended blade, but also is convenient to operate; the blunt parts at the lower ends of the first guard and the second guard form a blocking surface, which limits the size and Limit the depth of incision to avoid the situation of too shallow or too deep incision. The operation is more precise, reduces the pain of patients, and is safer and more reliable. In addition, the position of the blocking surface can be adjusted at any time, and the depth of incision can be adjusted at any time according to the needs of the operation. .

Description of drawings

Fig. 1 is a schematic structural view of a preferred embodiment of the present invention;

Fig. 2 is a schematic diagram of the first blade exposed from the blade in Fig. 1;

Fig. 3 is a sectional view along A-A of Fig. 1;

Fig. 4 is a sectional view along B-B of Fig. 2 .

detailed description

Further description will be given below in conjunction with the accompanying drawings and preferred embodiments of the present invention.

As shown in Figures 1-4, this double-ended scalpel with a protective cover includes a handle 1, a first blade 2, a second blade 3 and two sheaths 4, and the first blade 2 is installed on the handle 1. One end of the handle, the second blade 3 is installed on the other end of the handle 1, and the first blade 2 and the second blade 3 are facing oppositely; the first blade 2 and the second blade 3 both include a blade edge 201 and a knife back 202; two sheaths 4 are respectively installed on the first blade 2 and the second blade 3, and the size and contour of the two sheaths 4 are respectively matched with the first blade 2 and the second blade 3; the sheath 4 includes two pin rods 401, the first Protective sheet 402, the second protective sheet 403, the first elastic sheet 404 and the second elastic sheet 405, the cross sections of the first protective sheet 402 and the second protective sheet 403 are arc-shaped, the first protective sheet 402, the second protective sheet 403 are both Bending outwards, the upper ends of the first guard plate 402 and the second guard plate 403 are also provided with a pressing plate 406; the back of the knife 202 is provided with two pin holes 407, and the two pin rods 401 are respectively in the corresponding pin holes 407, and the pins The rod 401 is in close contact with the pin hole 407, and the upper ends of the two pin rods 401 are connected together by a connecting bar 408; Two pairs of first elastic pieces 404 and second elastic pieces 405 are provided, wherein a pair of first elastic pieces 404 and second elastic pieces 405 are respectively connected to one of the pin rods 401, and the other pair of first elastic pieces 404 and second elastic pieces 405 are respectively connected to the other pin bar. pin rod 401); the first protection piece 402 and the second protection piece 403 are located on both sides of the knife back 2 respectively, and the upper parts of the first protection piece 402 and the second protection piece 403 are connected with the first elastic piece 404 and the second elastic piece 405 respectively. The outer end is connected, and the lower ends of the first guard 402 and the second guard 403 are all provided with a blunt portion 5 towards the blade 201; The distance between the upper end of the sheet 403 and the pin rod 401.

Both the first protective sheet 402 and the second protective sheet 403 are plastic sheets; the first elastic sheet 404 and the second elastic sheet 405 are both plastic elastic sheets, or both may be metal elastic sheets.

By setting the first blade 2 and the second blade 3 respectively on the knife handle, the first blade 2 and the second blade 3 adopt blades of different specifications respectively, so that a scalpel can be applicable to the needs of various tissue cutting without Delay in operation due to finding no suitable scalpel; in order to solve the safety problems caused by setting the first blade 2 and the second blade 3 at both ends of the handle 1 respectively, on the first blade 2 and the second blade 3 A sheath 4 is provided respectively; the sheath 4 adopts the structural mode of a pin rod 401, a first guard 402, a second guard 403, a first elastic 404 and a second elastic 405, and a pin hole 407 is provided on the knife back 202, Under normal conditions, under the action of the first elastic piece 404 and the second elastic piece 405, the lower ends of the first protective piece 402 and the second protective piece 403 are clamped and clamped to each other in the middle, so that the blade 201 is closed, that is, the blade 201 is closed. Wrapped in the middle of the first protection sheet 402 and the second protection sheet 403, when you want to use it, just gently press the pressure piece 406 on the upper end of the first protection sheet 402 and the second protection sheet 403 to the middle, and squeeze the first elastic sheet 404 , the second elastic piece 405, the lower ends of the first protective piece 402 and the second protective piece 403 will open outwards, at this time, just gently pull the first protective piece 402 and the second protective piece 403 in the direction of the blade back 202 (upward) ( Or pull the connecting bar 408 on the pin bar 401), the first guard plate 402 and the second guard plate 403 will move from the blade 201 to the knife back 202 and simultaneously drive the pin bar 401 to move upwards. When the blade 201 is exposed, remove the first guard plate 402, the pressing force of the upper end of the second guard 403, under the action of the first elastic piece 404 and the second elastic plate 405, the lower ends of the first guard 402 and the second guard 403 are clamped to each other in the middle and clamped on the blade 201 At this time, since the first guard 402 and the second guard 403 are clamped on the blade 201 in the middle, the positioning of the first guard 402 and the second guard 403 is formed, the first guard 402, the second guard 403 The protective sheet 403 will not slide up and down easily, and will not affect the smooth operation of the operation. Similarly, when the blade 201 is to be closed, the first protective sheet 402 and the pressing sheet 406 on the second protective sheet 403 are pressed, and then the upper end of the second protective sheet 403 is pressed. 202 pushes the first protective sheet 402 and the second protective sheet 403 (or the connecting strip 408 on the pin rod 401) toward the blade 201 until the first protective sheet 402 and the second protective sheet 403 completely seal the blade 201 before removing the first protective sheet 402 and the second protective sheet 403. The pressing force on the upper ends of the protective sheet 402 and the second protective sheet 403 can realize the sealing and exposure of the blade 201 by gently pressing and pulling (pushing), which not only solves the safety problem of the double-ended blade 201, but also is easy to operate; The lower ends of the first guard 402 and the second guard 403 are all provided with a blunt portion 5 towards the blade 201, and since the first elastic 404 and the second elastic 405 open outwards when the blade 201 is exposed. The first guard plate 402 and the second guard plate 403 will not easily slide up and down, therefore, the blunt portion 5 at the lower end of the first guard plate 402 and the second guard plate 403 constitutes a relatively smooth barrier. The blocking surface limits the exposed size of the blade 201 and also limits the depth of the knife, avoiding the situation where the knife is too shallow or too deep, the operation is more accurate, the pain of the patient is reduced, and it is safer and more reliable. In addition, by pressing the first The pressing sheet 406 on the upper ends of the first guard plate 402 and the second guard plate 403 can adjust the positions of the first guard plate 402 and the second guard plate 403 at any time, that is, adjust the position of the blocking surface, and adjust the position of the knife feed at any time according to the needs of the operation. depth.

By setting the pressure piece 406 on the upper ends of the first protection piece 402 and the second protection piece 403, when the blade 201 is to be closed or the blade 201 is exposed, as long as the pressure piece 406 is gently pressed by hand, the first protection piece 402, the second The protection sheet 403 is opened, so that the lower ends of the first protection sheet 402 and the second protection sheet 403 leave the first blade 2 (second blade 3), and then the other hand gently pushes the first protection sheet 402, the second protection sheet 403 (or the pin rod 401), which makes the opening or closing of the sheath 4 (that is, the up and down movement of the sheath 4) quite easy, and further enhances the safety performance.

The cross-sections of the first guard 402 and the second guard 403 are all set to be arc-shaped, and bend outwards, so that the first guard 402 and the second guard 403 have certain elasticity, and the first guard 402 and the second guard 403 have certain elasticity. The lower ends of the pieces 403 will be clamped inwardly and clamped to each other or to the blade 201, which is not easy to slide and has better stability.

In addition, it should be noted that, in the specific embodiments described in this specification, the names of various parts may be different, and all equivalent or simple changes made according to the structure, features and principles described in the patent concept of the present invention include Within the protection scope of the patent of the present invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, as long as they do not deviate from the structure of the present invention or exceed the scope defined in the claims. All should belong to the protection scope of the present invention.

Claims (8)

1. A double-ended scalpel with a protective cover, comprising a handle, a first blade and a second blade, the first blade and the second blade both include a blade and a blade back, the first blade is installed on one end of the handle, and the second The blade is installed on the other end of the knife handle, and it is characterized in that: it also includes two sheaths, and the two sheaths are installed on the first blade and the second blade respectively, and the size and outline of the two sheaths are respectively the same as those of the first blade. The blade and the second blade are matched; the sheath includes at least one pin rod, a first guard plate, a second guard plate, a first elastic piece and a second elastic plate; the knife back is provided with at least one pin hole, and the pin bar is in the pin hole, The pin rod is in close contact with the pin hole; the inner ends of the first shrapnel and the second shrapnel are respectively connected to the upper part of the pin rod; The upper part of the shield is connected with the outer ends of the first shrapnel and the second shrapnel respectively, and the lower ends of the first shrapnel and the second shrapnel are provided with a blunt portion towards the blade; the lengths of the first shrapnel and the second shrapnel are greater than that of the first shrapnel The distance between the upper end of the first guard and the second guard and the pin rod. 2. The double-ended scalpel with a protective sheath according to claim 1, characterized in that: the upper ends of the first guard and the second guard are also provided with pressure pieces. 3. The double-ended scalpel with a protective sheath according to claim 1 or 2, characterized in that: the direction of the first blade and the second blade are opposite. 4. The double-ended scalpel with protective sheath according to claim 1 or 2, characterized in that: the first protective sheet and the second protective sheet are both plastic sheets. 5. The double-ended scalpel with a protective sheath according to claim 1 or 2, characterized in that: the first elastic piece and the second elastic piece are both metal elastic pieces or plastic elastic pieces. 6. The double-headed scalpel with a protective cover as claimed in claim 1 or 2, wherein the cross-sections of the first guard and the second guard are arc-shaped, and the first guard and the second guard are arc-shaped. The sheets are bent outwards. 7. The double-ended scalpel with a protective sheath according to claim 1 or 2, characterized in that: there are two pin rods, and two pin holes on the back of the knife. 8. The double-ended scalpel with a protective sheath according to claim 7, characterized in that: the upper ends of the two pins are connected together by a connecting strip.