JP2006081688A - Medical stapler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a medical stapler which enables a user to refill staples by replacing a cartridge, resets the number of the staples at the time of the replacement of the cartridge by turning the number of the staples back to zero, and displays the number of the staples accommodated in the replaced cartridge 24 in advance. <P>SOLUTION: This medical stapler is equipped with the sterilized cartridge 24 attached to and detached from the stapler body 1 of the stapler for accommodating a prescribed number of staples, a thrusting mechanism for thrusting the staples supplied to a thrusting part 5 at the end of the cartridge, and a counter device 20 which counts the number of the staples thrust from the thrusting mechanism and displays it, and has a resetting mechanism which operates simultaneously with the attachment of the cartridge and resets the display of the counter device 20. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is a medical stapler for suturing a wound in a surgical operation or the like, which can replenish staples and counts the staples or staples according to the staples used for suturing. It is about.

  In general, after incision of living tissue by surgical operation, the wound is sutured with a suture thread. However, a method of suturing with a staple is often adopted because the surgical scar is inconspicuous or healing is fast. ing.

  A medical stapler is composed of a stapler body including a punching mechanism and an operation lever for operating the punching mechanism. By rotating the operation lever, staples are pushed out one by one and inserted into the skin while being bent. In this way, the skin is detached from the stapler body after the skin is sutured.

  By the way, in the medical stapler, the staple itself must be sterilized together with the stapler body, and in the medical field, in order to prevent a medical accident that accidentally leaves the staple in the body during the suturing operation, Start with a certain number of staples set, and calculate the number of staples remaining on the medical stapler and the number of staples actually used at the suture site, and add the total number of both staples. Always check by eye to see if the number matches the number loaded first.

  Note that there are several types of staplers corresponding to the size of the wound, up to about 35 staples, such as 10 staples and 20 staples.

  Due to the above circumstances, the medical stapler is used in a state where a certain number of staples are loaded, but it can be roughly divided into an integrated type in which parts cannot be separated and a head loaded with certain staples can be replaced. There is a separate type. All types of staplers are generally disposable for hygiene reasons and are discarded after being used for a single operation (unless there are multiple wounds).

  However, when a suture operation is carried out with one stapler, the stapler must be replaced even if only one staple is missing. After the replacement stapler has used one of the shortages, it must be discarded even though there is a sufficient remaining number. Discard the entire unit depending on the type, or remove only the head from the stapler body and discard. Even if the head is discarded, the head is provided with a staple driving mechanism, that is, a staple driving driver, a guide path, an anvil, peripheral parts, and the like. Since only the main body and the control lever remain, discarding the most expensive head is not very effective. For this reason, any type of stapler is wasteful.

  Thus, when suturing a wound, it is very important to easily know how many staples are stored inside the cartridge that was initially mounted or replaced. Nevertheless, there is currently no means to meet this requirement.

On the other hand, a document binding stapler, not a medical stapler, is known in which staples can be replenished using a cartridge. A document binding stapler is also known which is provided with a counter device for ejected staples.
Utility Model Registration No. 3031193 Japanese Utility Model Publication No. 5-93771

  However, it is not necessary to consider the possibility of contamination by germs when replacing the cartridge as described above. However, in a medical stapler, the possibility of germs entering a living tissue must be avoided as much as possible. It cannot be applied to a medical stapler as it is.

  Further, in Patent Document 2, when the cartridge is replaced, a specific mechanism for returning the counter to zero or how to add the number of staples after replacement to the used staples before replacement is completely disclosed. Absent.

  The present invention solves the above-mentioned problems and can replenish staples by exchanging cartridges, and resets the number of staples to zero at the time of replacement, or is stored in the replaced cartridge in advance. It is an object of the present invention to provide a medical stapler capable of displaying the number of staples.

  In order to solve the above-described problems, a medical stapler according to the present invention includes a sterilized cartridge that is detachable from a stapler body and stores a predetermined number of staples, and a punch that drives out staples that are supplied to a leading end of the cartridge. And a counter device for counting and displaying the number of staples ejected from the launching mechanism, and a reset mechanism for resetting the display of the counter device in conjunction with the mounting of the cartridge. And

  Instead of the reset mechanism, a number display mechanism for displaying the number of staples stored in advance in the cartridge in conjunction with the mounting of the cartridge may be provided.

  According to the first aspect of the present invention, the staple can be replenished hygienically by exchanging the cartridge, and the counter device is reset when the cartridge is attached to the stapler body at the time of cartridge replacement, and the number of staples in the counter Can be returned to zero, so that the number of staples used for wound stitching as well as the number of staples previously stored in the replaced cartridge can be known.

  According to the second aspect of the invention, the number of staples stored in advance in the replaced cartridge can be displayed, so that it is possible to easily know whether or not the number of staples suitable for stitching a wound is stored. it can.

  FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the stapler, and FIG. 3 is an enlarged view of a front portion of the stapler. In the figure, reference numeral 1 denotes a stapler body, and 2 denotes an operation lever.

  A staple supply passage 4 and a punching mechanism A are provided at the inner front end of the stapler body 1. A driver plate 6 is slidably arranged in the upper and lower directions at the upper portion of the launch portion 5 formed at the front end of the staple supply passage 4, and an anvil 7 is formed at the lower portion of the launch portion 5. The driver plate 6 is biased by a spring 8 so that it is always in the initial position. In addition, as shown to Fig.6 (a), the lower end of the driver plate 6 is formed in the inverted concave shape, and the protrusion 6a is formed in the both sides. Further, the staple 9 inside the supply passage 4 is configured to be always supplied to the launching unit 5 by a pusher 11 and a spring 12.

  Next, the operation lever 2 is attached to a support shaft 10 provided in the stapler main body 1 so as to be reciprocally rotatable, and a front end portion thereof is disposed so as to be able to contact the upper end of the driver plate 6 during forward movement.

  Next, the operation mode of the launch mechanism A will be described. When the operating lever 2 is pulled and rotated in one direction (forward movement), as shown in FIGS. 3 and 4, the head of the operating lever 2 is operated. The driver plate 6 is pressed downward by the front end portion 2a, moves against the spring force, and pushes out the staple 9 supplied to the launching portion 5. During the extrusion, the center of the crown portion 9a of the staple 9 is supported by the anvil 7, and cannot move further downward. On the other hand, since the projecting pieces 6a formed on both sides of the driver plate 6 press both sides of the crown portion 9a of the staple 9, only the both side portions of the staple 9 are shown in FIGS. 6 (b) and 6 (c). Is pushed down, and both the leg portions 9b of the staple 9 are bent so as to approach each other around both ends of the anvil 7. Thereafter, as shown in FIG. 5, after the operating lever 2 is moved to the moving end, the force on the operating lever 2 is released and moved backward to release the staple 9 from the driver plate 6 and the anvil 7. The stitching at the site is finished. By repeating the same operation, the suture of the entire wound is completed.

  Next, as shown in FIG. 7, the stapler main body is provided with a counter device 20 that counts and displays the number of staples that have been launched from the launching mechanism. The counter device 20 utilizes the fact that one staple 9 is driven out each time the operating lever 2 is pulled, and is constituted by a display disk 13 and an operating lever 2 provided on the stapler body.

  That is, a ratchet-shaped display disk 13 is rotatably disposed inside the stapler body 1. On the periphery of the display disk 13, ten sawtooth teeth 15 (more or less than ten) may be formed. In addition, numerals are displayed on the side surface of the display disk 13 at positions corresponding to the respective teeth 15, and a transparent window (not shown) is formed on the side surface portion of the stapler body 1 at positions corresponding to the numeral “0”. Has been.

  On the other hand, an operating piece 18 is formed to protrude from the operation lever 2. When the operation lever 2 is pulled, the tip locking portion 18a of the operating piece 18 is engaged with the teeth 15 of the display disk 13 in the middle of the operation lever 2, and the operation lever 2 is moved to the moving end as shown in FIG. When operated, the tooth 15 is also pushed up, and the pushed-up movement amount is set to be one tooth.

  According to the above configuration, each time the staple 9 is driven by pulling up the operating lever 2, the tooth 15 of the display disk 13 is rotated by one, so that the number on the display disk 13 is also moved up or by one. Displayed down. The number of staples 9 can be confirmed by viewing this number from the perspective window.

  As shown in FIG. 8, the stapler main body 1 is provided with an L-shaped detent 17 so that the display disk 13 rotates only in one direction. The detent 17 is provided so as to be rotatable about a shaft 21 provided at the bent portion. A locking jaw 22 is formed at the end of one side 17a, and the spring 23 arranged at the end of the other 17b The locking jaw 22 is configured to always engage with the tooth 15. In addition, the piece 17a including the locking jaw 22 of the detent 17 is bent by elasticity.

  Further, if the numbers on the display disk 13 are sequentially displayed as “0” to “1” “2” “3” “4”... Along the direction of rotation, each time the operating lever 2 is pulled up, The number on the display disk 13 is also incremented by one, and if the numbers are sequentially displayed, for example, from “0” to “9” “8” “7” “6”. The number on the display disk 13 is also displayed by one lowering. If the display is moved down, the remaining amount of staples 9 in the cartridge is displayed on the display disk 13.

  In this way, it is possible to know how many staples 9 are remaining in the cartridge by subtracting the number of staples 9 that have been punched out, so that the stitching of the wound can proceed efficiently.

  In order to read the numbers, the display disk 13 and the teeth 15 are separated, a coaxial display disk is fixed to the side of the ratchet, and numbers are displayed at positions corresponding to the teeth on the outer peripheral surface of the display disk. Alternatively, a transparent window may be formed on the upper surface of the stapler body 1.

  Next, as shown in FIGS. 7 and 8, the staple supply passage 4 is constituted by a cartridge 24 that is detachable from the staple 9 body. A reset mechanism for resetting the display of the counter device 20 in conjunction with the mounting of the cartridge 24 is provided.

  That is, the cartridge 24 is sterilized in advance, and a predetermined number of independent rose staples 9 are accommodated therein in an aligned state. Further, a pusher 11 and a spring 12 for supplying the staples 9 to the front end launching unit 5 are provided. Is provided. A convex portion 25 is formed on the rear portion of the upper surface 24 a of the cartridge 24.

  The cartridge 24 is sterilized and sealed in a disinfecting pack, and is opened and used at the surgical site. The cartridge 24 is configured to be pushed in and attached from the rear to the front as shown in FIG.

  Next, a return spring 26 such as a mainspring spring is attached to the rotation shaft of the display disk 13, and one end of the return spring 26 is fixed to the side surface of the display disk 13. When the display disk 13 is reversely rotated by the spring force of the return spring 26, the display disk 13 is finally returned to the reference position (the position corresponding to “0” in the see-through window) and stopped.

  Further, when the cartridge 24 is mounted on the stapler body 1, the spring-side end of the detent 17 contacts the convex portion 25 at the rear of the upper surface portion 24 a of the cartridge 24, but the other portion of the upper surface portion does not It is set not to hit.

  According to the above configuration, when all the staples 9 in the already mounted cartridge 24 are consumed, the cartridge 24 is replaced with a new one. When the used cartridge 24 is pulled out from the stapler body 1, the same state as in FIG. 7 is obtained, and one end 17 b of the detent 17 is disengaged from the convex portion 25 of the cartridge 24. By rotating, the locking jaw 22 of the detent 17 and the display disk 13 are unlocked. For this reason, the display disk 13 rotates reversely by the spring force of the return spring 26 and stops at the reference position, so that “0” is displayed in the fluoroscopic window. Thereafter, when the new cartridge 24 is mounted as shown in FIG. 8, one end 17b of the detent 17 is engaged with the convex portion 25 of the cartridge 24 and is engaged with the teeth of the display disk 13, and the detent 17 is set. Then, the count associated with the next launch is prepared and the reset is completed.

  As a mechanism that is reset when the cartridge is replaced, a sensor that detects the cartridge may be provided on the stapler body side, and the display numerical value may be reset by an off signal of the sensor when the cartridge is removed.

  FIGS. 9 and 10 show a staple number display mechanism for displaying the number of staples stored in the cartridge 24 in conjunction with the mounting of the cartridge 24. In FIG. 9, reference numeral 13 denotes a display disk. The display disk 13 is formed in a gear shape, and a plurality of teeth 15 are formed at the peripheral edge. On the other hand, the cartridge 24 is sterilized, and a predetermined number of independent rose staples 9 are housed in an aligned state therein, and further, a pusher 11 and a spring 12 for supplying the staple 9 to the front end launching unit 5. Is provided. Further, a tooth 28 or a rack is formed at the upper rear portion of the cartridge 24. As shown in FIG. 11, the teeth 28 are formed according to the number of staples 9 accommodated therein, and the teeth 28 of the cartridge 24 with 30 pieces are compared with the number of teeth of the cartridge 24A with 20 pieces. Twice as many teeth are formed, and three times as many teeth as the number of teeth of the cartridge 24B containing ten pieces are formed.

  Numbers such as “0”, “10”, “20”, and “30” are displayed on the side surface of the display disk 13. A see-through window (not shown) is formed on the side surface of the stapler main body 1, and when the display disk 13 is in the initial position, “0” is set to be displayed on the see-through window. When the cartridge 24 is mounted on the stapler body 1, the teeth of the display disk 13 are set to mesh with the teeth 28 of the cartridge 24.

  In the above configuration, when the cartridge 24 containing 10 staples is mounted, the display disk 13 and the teeth 15 and the teeth 28 of the cartridge 24 mesh with each other in the middle of insertion, so that the cartridge 24 is further moved as shown in FIG. The display disk 13 rotates in proportion to the movement of the cartridge 24, and the number “10” is displayed in the see-through window.

  Next, when the cartridge 24 is used up, it is pulled out in the reverse direction. Accordingly, the display disk 13 rotates in the reverse direction and the rotation amount is the same as in the normal rotation. Therefore, when the cartridge 24 is completely pulled out, the display on the display disk 13 is also “0”.

  Next, when 30 cartridges 24B are mounted, the amount of rotation of the display disk 13 will be three times that of 10 cartridges, so the number "30" is displayed in the fluoroscopic window and is stored in the cartridge 24 in advance. It can be seen that the number of staples 9 is 30.

  A configuration shown in FIG. 12A may be adopted as a staple number display mechanism for displaying the number of staples stored in advance in the cartridge 24 in conjunction with the mounting of the cartridge 24. That is, several detection sensors 29a, 29b, and 29c (which may be limit switches) for detecting the cartridge 24 are arranged on the stapler body 1 side, and the cartridge 24 is covered at different positions depending on the number of staples 9 stored therein. The detection unit 30 is provided.

  According to the above configuration, it is possible to determine how many cartridges 24 are contained depending on which position of the stapler body 1 the detected portion 30 is detected when the cartridge 24 is mounted on the stapler body 1. For example, when 10 cartridges 24 are mounted as shown in FIG. 9A, the detected portion 30 is detected by the front sensor 29a as shown in FIG. When attached, the detected portion 30 is detected by the last sensor 29c as shown in FIG.

  An IC sensor is provided for each cartridge 24, and the number of staples 9 of the cartridge 24 is input in advance to each IC sensor. When the cartridge 24 is mounted, the number of staples 9 is displayed in an appropriate display window. You may comprise so that it may display.

1 is a perspective view of a medical stapler according to the present invention. It is an enlarged vertical sectional view of the stapler. It is a longitudinal cross-sectional view of the principal part which shows the operation | movement aspect of the said stapler. It is a longitudinal cross-sectional view of the principal part which shows the operation | movement aspect of the said stapler. It is a longitudinal cross-sectional view of the principal part which shows the operation | movement aspect of the said stapler. (A) (b) (c) is an explanatory view of the bending mode of staples. It is sectional drawing of the principal part which shows a counter apparatus, a cartridge mounting aspect, or a reset state. It is sectional drawing of the principal part which shows the operation | movement of the said counter apparatus and the state at the time of completion | finish of cartridge mounting. It is sectional drawing of the principal part which shows the operation | movement aspect of the kind display apparatus of a cartridge. It is sectional drawing of the principal part which shows the state at the time of completion | finish of the said cartridge mounting. It is a longitudinal cross-sectional view which shows the kind of cartridge. (A) (b) (c) is sectional drawing of the principal part which shows the operation | movement aspect of the kind display apparatus of another cartridge.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stapler main body 2 Operation lever 5 Launching part 9 Staple 20 Counter apparatus 24 Cartridge

Claims (2)

A sterilized cartridge that can be attached to and detached from the stapler body and contains a predetermined number of staples, a launch mechanism that ejects staples supplied to the launch portion at the tip of the cartridge, and the number of staples ejected from the launch mechanism are counted. And a counter device that displays
A medical stapler comprising a reset mechanism for resetting the display of the counter device in conjunction with the mounting of the cartridge. Instead of the reset mechanism, a medical stapler provided with a number display mechanism for displaying the number of staples previously stored in the cartridge in conjunction with the mounting of the cartridge.

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