WO2014040368A1

WO2014040368A1 - Circular purse string clamp able to automatically sew up purse

Info

Publication number: WO2014040368A1
Application number: PCT/CN2013/000865
Authority: WO
Inventors: 李学军; 刘青
Original assignee: 北京中法派尔特医疗设备有限公司
Priority date: 2012-09-17
Filing date: 2013-07-18
Publication date: 2014-03-20
Also published as: CN102813538B; CN102813538A

Abstract

Disclosed is a circular purse string clamp able to automatically sew up a purse. The clamp comprises a clamp body (1) and a sewing needle assembly (3), wherein an annular sewing needle sliding groove is provided in a head part of the clamp body (1), the sewing needle assembly (3) comprises a sliding block (31) and inner and outer arc-shaped sewing needles (32, 33) fixedly connected with the sliding block (31), and the sewing needle assembly (3) is slidably mounted in the annular sewing needle sliding groove. The circular purse string clamp can ensure a suitable amount of tissue at the purse and can automatically, conveniently and reliably sew up a purse.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of medical devices, and in particular to a circular pliers that can automatically load a purse. BACKGROUND OF THE INVENTION In surgical procedures, since the invention of the first staple-like product in the 1960s, the medical stapler has become an indispensable medical device in the process of assisting the suture. With the development of medicine and the development of medical device products, more and more staple products are used in clinical practice. The scope of application of this kind of products has been involved in the fields of gastrointestinal surgery, hepatobiliary surgery, thoracic surgery, urology, obstetrics and gynecology, etc., and has become one of the essential tools for doctors. The application of this kind of tool has the advantages of less intraoperative bleeding and shorter operation time for patients, and the use of instruments instead of manual can reduce errors and infections caused by manual, so that patients can recover faster after surgery. Doctors often use a tubular stapler to perform the end-to-end anastomosis of the digestive tract. Before the anastomosis, the tissue must be sutured at one end to implant the abutment of the tubular stapler so that it can be firmly ligated after the central rod is placed, and then the tissue anastomosis can be performed. At present, many doctors manually suture the purse, which can not guarantee the proper amount of tissue at the purse. If there is too much residual tissue, the stapler will fail to be fired. If it is too small, there will be a risk of paralysis after the anastomosis. Therefore, during use, doctors are increasingly using purse pliers to suture the purse. The performance of the device directly affects the surgical process and is very effective for the surgical effect. Important role. At present, there are two main types of pong pliers that are actually used, one is a linear all-metal manual pong pliers, and the other is a straight-seam automatic pong pliers. For straight-type manual pliers, a needle with a suture at the end is required to be manually sutured through the clamped tissue. During the operation, the tissue is clamped with the jaws, and then the notch is locked. The human tissue is naturally clamped and a part of the tissue is squeezed into the gap of the slot. At this time, a tail is used from the end of the pliers. The needle is inserted into the upper circular hole of the pliers, pulled out from the other side, then the needle is turned around, and then passed out through the lower hole of the pong pliers, and finally the two ends of the purse string are knotted on one side. This requires at least twice the length of the pliers to complete the operation (the needle requires a lot of room for operation), but for a surgical site where the position is limited, such as rectal resection or esophagectomy, use this pliers to hit The purse can not complete the operation or there is a great risk of surgery. Because there is no good surgical field of view and manual needle stitching, it is easy to injure other tissues and organs nearby, and there is a huge risk of surgery. The other is a linear staple-type automatic pliers. When the operation is performed, the tissue is clamped by the jaws, and then the notch is locked. The human tissue is naturally clamped and a part of the tissue is squeezed into the gap of the slot. At the same time, the staples press the purse string on the tissue. At this time, the notch is loosened, and the device is lifted. The purse string will be lengthened along the track along which the staple is nailed. The instrument has a wire compartment and can store 600mm. Long sutures) Then hit the purse. This device has great disadvantages for surgical sites where rectal resection or esophagectomy is limited: First, the purse string can only be pulled along the cross section of the organ tissue, which requires a suitable operating space. Otherwise, it is easy to obliquely force the staples to detach from the tissue, resulting in failure of the purse, and it is impossible to have a suitable operating space for the location-limited portion, so the risk of surgery in such a place is extremely high; If the pulling force is too large, it may cause the staples to fall into the human body. Due to the limited position and the small staples, it is not easy to find the dropped staples, which may eventually cause the staples to remain in the human body, possibly bringing life to the patient. Threat. It can be seen that the existing pliers have obvious defects and deficiencies. How to create a purse stapler that can automatically, conveniently and reliably load the purse in the narrow part of the operation is one of the current important research and development topics. SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to provide a circular load pliers capable of automatically charging a purse, which can automatically, conveniently and reliably perform a purging package when performing operations on a limited position such as rectal resection or esophagectomy. Thereby overcoming the deficiencies of the prior art. In order to solve the above technical problem, the present invention provides a circular load pliers for automatically charging a purse, comprising a caliper body and a needle assembly, wherein: the caliper body has an annular needle chute therein; the needle assembly includes a slider and An inner and outer arcuate needle fixedly coupled to the slider, the needle assembly being slidably mounted in the annular needle chute. As a further improvement of the present invention, one end of the annular needle chute is provided with a wire groove and a thimble baffle, and the wire groove is provided with two absorbable sutures, and the suture passes through the through hole and the inside of the tong body head. , the outer needle sleeve is connected. The needles of the inner and outer needles are tapered and provided with barbs. The needle sleeve is equivalent to the diameter of the needle needle body. A wire winding hole is disposed in the wire groove. The slider is an arc-shaped block, and two jacks are opened, and one ends of the inner and outer arc-shaped needles are respectively inserted into one jack, and are fixed by screws. The caliper body includes a fixed caliper body and a movable caliper body, wherein: the fixed caliper body comprises a fixed handle and a fixed head, and a fixed toothed side is provided on one side of the fixed head; the movable caliper body comprises a handle portion and a fork portion And a curved head, the curved head is provided with a tooth structure which can be closed with the fixed head; the fixed handle of the fixed caliper body passes through the fork of the movable caliper body and is rotatably connected by the fixing pin; The chute is an inner and outer needle chute in the corresponding section of the tooth structure, and a slider chute in the other section. The fixed handle of the fixed caliper body and the handle portion of the movable caliper body are correspondingly provided with a jaw locking hook. The needle body is also equipped with a needle driving device, and the head of the needle driving device drives the slider of the needle assembly to move along the annular needle chute. A drive knob is fixed to the tail of the needle driving device, a transmission gear is fixed to the head, a swing arm gear is meshed with the transmission gear, and a swing arm is fixedly connected to the swing arm gear, and the swing arm is fixedly connected with the slider of the needle assembly. After adopting the above design, the present invention has the following beneficial effects compared with the prior art: The circular automatic pursing pliers is suitable for narrow surgical sites such as rectal resection or esophagectomy, which can ensure proper tissue volume at the purse, automatic and convenient. , reliable to carry the purse. The technical solution of the present invention will be further described in detail below through the accompanying drawings and embodiments. DRAWINGS

The above is only an overview of the technical solutions of the present invention, and the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. 1 is a schematic structural view of a circular pliers of the present invention which can automatically load a purse.

2 is a schematic exploded view of a circular pliers of the present invention capable of automatically charging a purse. Figure 3 is a schematic exploded view of the fixed caliper portion of the present invention.

Fig. 4 is a schematic exploded view showing the movable caliper portion of the present invention.

Fig. 5 is a structural schematic view showing the needle insertion of the needle sleeve in the jaw closed state of the present invention.

Figure 6 is a schematic view showing the structure of a needle assembly of the present invention.

Fig. 7 is a schematic exploded view showing the needle driving device of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIG. 1 and FIG. 2, a circular pliers for automatically charging a purse according to the present invention includes a caliper body and a needle assembly 3. In order to clearly describe the product structure of the present invention,

The right side of 1 is the front side and the head, and the left side is the rear side and the tail part.

Wherein, the inside of the caliper body is provided with an annular needle chute. Specifically, the caliper body may be composed of the fixed caliper body 1 and the movable caliper body 2, and the needle driving device 4 may be installed in the caliper body. Referring to FIG. 3, the fixed caliper body 1 includes a fixed handle 11 and a fixed head, and a fixed toothed edge is provided on one side of the fixed head. Specifically, the fixed head is mainly assembled by bolts of the fixed caliper front piece 12, the fixed caliper back piece 13, the top cover 14, the head bottom plate 15, and the head baffle 16. Wherein, one side of the fixed caliper rear piece 13 and the fixed caliper front piece 12 is an arc-shaped toothed edge, and the corresponding angle of the toothed structure is not more than 180°, and the fixed caliper rear piece 13 and the fixed caliper front piece 12 are An annular needle chute is formed between them. The top cover 14 is fan-shaped and is mounted on the front surface of the fixed caliper front panel 12, corresponding to the portion of the non-toothed structure. The head bottom plate 15 is semicircular or semi-circular, and is mounted on the rear side of the fixed caliper rear piece 13, corresponding to the portion of the non-toothed structure. The head baffle 16 is mounted on one side of the rear plate 13 of the fixed caliper body, and cooperates with the head bottom plate 15 to seal the solid The rear side space of the non-toothed portion of the back piece 13 of the caliper body. Further, in the fixed head of the fixed caliper body 1 (for example, on the fixed caliper rear piece 13), a wire groove 17 and a thimble stopper 18 are provided at one end of the tooth structure, and the outer side of the wire groove 17 is covered by the wire groove stopper 19 Closed, the slot 17 is provided with an absorbable suture, and the slot cover 19 is inserted into the fixed jaw back piece 13 through the slot. Referring to FIG. 4, the movable caliper body 2 includes a handle portion 21, a fork portion 22 and a curved head portion 23, wherein the curved head portion 23 corresponds to the toothed edge of the fixed head of the fixed caliper body 1, A toothed structure that can be closed with the fixed head is provided, and the fork portion 22 is fixedly coupled to both ends of the curved head portion 23. Specifically, the outer side of the handle portion 21 can be sleeved with an outer sleeve by an interference fit. The curved head portion 23 of the movable caliper body 2 can also be assembled by bolts from the front and rear panels, and a curved needle chute is provided between the front and rear panels. The hollow structure of the fork has sufficient space for the scissors to cut the tissue during surgery. Preferably, between the fixed caliper front piece 12 and the fixed caliper rear piece 13, between the fixed caliper back piece 13 and the head bottom plate 15, and the front and rear pieces of the movable caliper 2 curved head 23 Corresponding curved protrusions and grooves are provided between each to ensure the accuracy of the connection position and improve the assembly efficiency. The fixed handle 11 of the fixed caliper body 1 passes through the fork portion 22 of the movable caliper body 2, and is rotatably connected by the fixing pin 25, and also the fixed handle 11 of the fixed caliper body 1 and the handle portion 21 of the movable caliper body 2 Correspondingly, a jaw locking hook 26 is provided. The jaw locking hook 26 can be an L-shaped barb as shown in FIG. 4. When the handle portion 21 of the movable caliper body 2 is pressed down, the two L-shaped barbs are hooked to each other to fix the fixed head of the caliper body 1 and The orphaned head of the movable caliper body 2 is closed and locked. If the movable caliper body is to be loosened, the needle must be returned to the initial position, and then a certain lateral force is applied to the handle portion 21 of the movable caliper body 2, and the L-shaped barbs are disengaged from each other, and the jaws are disengaged. Can be opened. Referring to FIG. 5, the fixed head of the fixed caliper body 1 and the curved head of the movable caliper body 2 are completely rounded, and the diameter of the circular shape is between 30 and 80, and the closed pliers are closed. There is a complete annular needle chute in the head, and the needle assembly 3 is installed in the annular needle chute. Referring to FIG. 6, the needle assembly 3 includes a needle hub slider 31 and an inner needle 32 and an outer needle 33 which are inserted into the needle hub slider 31 at one end and locked by screws. The needle block slider 31 is a circular arc block, and the needle bodies of the inner and outer needles are all curved, and the needle body has a cross section of 0. 6-3, the head is tapered and has a barb. Correspondingly, please refer to FIG. 5 and FIG. 6. The annular needle chute is two thinner and parallel inner and outer needle chutes corresponding to the tooth-shaped structure, corresponding to the non-toothed structure corresponding section. It is a wider slider chute. The sutures 17 should also accommodate two sutures, and the sutures are respectively connected to the inner needle sleeve 34 and the outer needle sleeve 35 through the through holes in the fixed head. The inner and outer needle sleeves are hollow inside, corresponding to the cross-sectional diameter of the inner and outer needle bodies, the edges are chamfered, the inverted cone is tapered, and the head is slotted so that the needle can be smoothly inserted. There may also be a transition section between the connecting needle and the needle body. At the transition section, the needle forms a prominent boss to catch the slot of the needle sleeve. When the needle is rotated into position, it will be squeezed into the needle sleeve, and the needle sleeve is tightened. , so that the needle cover can be brought back. The initial position of the needle is located at one end of the tooth structure of the head of the pliers, the needle sleeve is located at the other end, the suture is connected to the tail of the needle sleeve and is placed on the thimble stopper 18, and the suture is passed through the rear piece of the fixed caliper 13 The holes are wound in the wire groove 17. The needle passes along the annular needle chute through the tissue sandwiched between the fixed jaw body 1 and the movable jaw body 2, moves to the needle sleeve, the needle needle is inserted into the needle sleeve, and then the needle is reversely rotated, and the needle barb is turned The needle cover is brought back, allowing the suture to pass through the tissue.

The needle driving device 4 passes through the fixed handle 11 of the fixed caliper body 1 in the axial direction, and the needle drive The head of the moving device 4 drives the needle assembly 3 to move around the annular needle chute. Specifically, please refer to FIG. 7 , the middle part of the needle driving device 4 is a rotating shaft 41 which is rotatably mounted in the fixed handle 21 , and a driving knob 42 is fixed to the tail of the rotating shaft 41 , and the head is fixed with a transmission. The gear 43 is meshed with a swing arm gear 44 at a position corresponding to the fork portion 22 of the movable caliper body 2, and the swing arm gear 44 is fixedly coupled to the needle seat slider 31 of the needle assembly 3 via the swing arm 45, and the swing arm gear 44 The bosses at both ends are axially positioned, and one end of the swing arm 45 is connected to the swing arm gear 44 by a bolt, and the other end is connected to the needle block slider 31 by a bolt. When the driving knob 42 rotates, the torsional force is transmitted to the swing arm 45 through the rotating shaft 41, the transmission gear 43, and the swing arm gear 44, and the swing arm 45 drives the needle seat slider 31 and the needle to move in the annular package chute. The cooperation of the swing arm gear 44 and the transmission gear 43 can offset the axis of the rotating shaft 41 with respect to the axis of the swing arm gear 44, thereby increasing the distance between the fixed caliper body 1 and the movable caliper body 2, and the movable caliper body 2 The curved design and the deviation of the gear axis provide space for the scissors to cut tissue during surgery. During the operation, when the purse pliers needle insertion and the threading process are completed, the tissue release jaws need to be cut, and the doctor can take the scissors to cut the tissue from the side and the front side of the movable caliper body 2, so the axis is offset. Design is very necessary. In use, first open the jaw locking hook 26, put the intestine part of the purging bag into the jaws, and close the handle portion 21 of the movable caliper body 2, so that the jaw locking hook 26 is stuck, and the pliers is kept closed. The state of locking keeps the intestinal tissue in a compressed state. When the drive knob 42 is rotated, when the drive knob 42 is rotated by about one-half of the circumference, the torsional force is transmitted to the needle block slider 31 through the rigidly connected needle drive device 4, thereby pushing the needle pin 32 on the needle block slider 31. , 33 moves in the annular needle chute, the needle pierces the jaws The human tissue in the gap, when the needle tip is rotated to the needle sleeve at the other end of the chute, the needle is inserted into the needle sleeve and caught by the barb, and the needle pushes the needle sleeve against the thimble stopper 18, and the drive knob 42 cannot Further rotation to ensure that the needle and needle sleeve are in place. Thereafter, the knob 42 is driven in the reverse direction, and the needle carries the needle sleeve back through the portion where the jaw is closed, so that the suture of the tail portion of the needle sleeve passes through the human body tissue. During the process of the needle sleeve being pulled to the other side of the jaw, the needle sleeve and the suture connected to the rear portion pass through the body tissue being tightened, and the two purse lines pass through the sides of the tissue respectively, due to the jaws. The toothed action causes the purse string to pass through the tissue for a period of time. When the drive knob 42 is rotated about one-half of a circumference, the hand has a shock that the hook is stuck, and the needle assembly 3 is returned to the initial position. Finally, open the jaw lock hook 26, pull the pocket pliers, and let the money be released. When the line is enough, cut the stitches on both sides, take out the pliers, stretch the stitches on both sides, adjust the position, and fix the position. The head is placed in the tissue, the sutures on both sides are tightened, and the suture is fastened to the center rod of the head of the circular stapler, and the purse is completed. This round automatic purse pliers is suitable for use in stenotic surgical sites where rectal or esophageal resection is limited. It can also be used to operate other areas where space is spacious.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Those skilled in the art can make some simple modifications, equivalent changes or modifications using the technical contents disclosed above. Within the scope of protection of the invention.

Claims

claims

1. A round purse pliers that can automatically open purses, characterized by including a pliers body and a suture needle assembly, wherein: an annular needle chute is provided in the head of the pliers body; the suture needle assembly includes a slider and a needle assembly. The inner and outer arc-shaped suture needles are fixedly connected, and the suture needle assembly is slidably installed in the annular suture needle chute.

2. The round purse pliers that can automatically open purses according to claim 1, characterized in that one end of the annular suture needle chute is provided with a wire trough and a thimble baffle, and two absorbable seams are placed in the wire trough. The suture is connected through the inner and outer needle sleeve of the through hole in the head of the forceps body.

3. The round purse pliers capable of automatically opening purses according to claim 2, characterized in that the needles of the inner and outer suture needles are tapered and provided with barbs.

4. The round purse pliers that can automatically open purse strings according to claim 2, characterized in that the diameter of the needle sleeve is equivalent to that of the suture needle body.

5. The round purse pliers capable of automatically opening purses according to claim 2, characterized in that the wire trough is provided with a thread wrapping hole.

6. The round purse pliers that can automatically open purses according to claim 1, characterized in that the slide block is an arc-shaped block and is provided with two sockets, and one end of the inner and outer arc-shaped suture needles are respectively Insert into a socket and secure with screws.

7. The round purse pliers capable of automatically opening purses according to any one of claims 1 to 6, characterized in that the pliers body includes a fixed pliers body and a movable pliers body, wherein: the fixed pliers body includes a fixed handle and a fixed head, with an arc-shaped toothed edge provided on one side of the fixed head; The movable pliers body includes a handle part, a fork-shaped part and an arc-shaped head. The arc-shaped head is provided with a tooth-like structure that can be closed with the fixed head; the fixed handle of the fixed pliers body passes through the fork-shaped part of the movable pliers body, and The annular needle chute is rotatably connected by a fixed pin; the annular needle chute is an inner and outer needle chute in the section corresponding to the tooth-like structure, and the other sections are slide block chute.

8. The round purse pliers capable of automatically opening purses according to claim 7, characterized in that the fixed handle of the fixed plier body and the handle portion of the movable plier body are respectively provided with jaw locking hooks.

9. The round purse pliers capable of automatically opening purses according to any one of claims 1 to 6, characterized in that a suture needle driving device is installed inside the pliers, and the head of the suture needle driving device drives the suture. The slide block of the needle assembly moves along the annular needle slide.

10. The round purse pliers capable of automatically opening purses according to claim 9, characterized in that a driving knob is fixed at the tail of the needle driving device, a transmission gear is fixed at the head, and a swing arm gear is engaged with the transmission gear. , the swing arm gear is fixedly connected to the swing arm, and the swing arm is fixedly connected to the slider of the sewing needle assembly.