CN219661796U

CN219661796U - Suture device, treatment device with suture device and treatment equipment

Info

Publication number: CN219661796U
Application number: CN202320000602.1U
Authority: CN
Inventors: 万平
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-09-12
Anticipated expiration: 2033-01-03

Abstract

The utility model provides a suture device, a treatment device with the suture device and treatment equipment. The suture needle is arranged on the main shell in a sliding way, one end of the suture needle is connected with a suture line, and the other end of the suture needle is a tip. The needle feeding assembly is arranged on the main shell and comprises a driving piece, a resetting piece and needle feeding teeth, wherein the needle feeding teeth and the suture needle are in a detachable clamping relationship; the driving piece acts on the needle inlet tooth and the suture needle in the clamping state to control the suture needle to advance and the reset piece to deform; when the driving piece is released, the clamping relation between the needle inlet tooth and the suture needle is released, and the reset piece drives the needle inlet tooth to reset; or the driving piece acts on the needle inlet teeth with released clamping relation to move relative to the suture needle and the reset piece deforms; when the driving piece is released, the needle inlet tooth is clamped with the suture needle, and the reset piece drives the needle inlet tooth and the suture needle to advance. The needle-withdrawing prevention component is arranged on the main shell and used for preventing the suture needle from withdrawing.

Description

Suture device, treatment device with suture device and treatment equipment

Technical Field

The present utility model relates to a therapeutic device, and more particularly, to a suture device, a therapeutic device having the suture device, and a therapeutic apparatus.

Background

Minimally invasive techniques are a trend in modern surgery, but still leave scars on the patient's body surface. Thus, no scar surgery has occurred. The body surface has no scar, and the operation is completed through the natural cavity by the soft endoscope, so the soft endoscope operation through the natural cavity becomes a research hot spot of the scar-free operation, and is also a third generation operation type after the operation of crossing an open abdomen and a laparoscopic operation. The body surface has no scar operation, small physiological trauma, smaller psychological trauma and corresponding reduction of postoperative complications in operation. In addition, the natural cavity endoscopic surgery does not need general anesthesia, the consumption of anesthetic is low, the anesthesia depth is reduced, part of patients are in a waking state, the anesthesia risk is greatly reduced, the postoperative recovery is quicker, the recovery time is obviously shortened, and the occurrence of postoperative complications is reduced; is more beneficial to extremely debilitating patients and patients with high surgical risks.

An endoscopic screw suturing system (Endoscopic HeliX Tacking System; https:// www.x-stack /) recently introduced by Apollo endoscopic surgical instruments, inc., of the United states, which not only can suture larger wounds or other target tissues, but also is more accessory and cumbersome to operate, and relies on at least 3 metal screws, knots or clips, the hard sharp screws rotating through the tissue for suturing remain in the body, and it is difficult to eliminate the possibility of secondary damage to digestive and even urinary and reproductive systems such as perforation, intestinal leakage, adhesion, and the like, combined with the accumulation of knotted hard clips, and peristalsis of the digestive tract and abdominal movement are more difficult to avoid damage.

Chinese patent CN212346609U (filing date 2020, month 4, 27) discloses a stapler, a treatment apparatus with a stapler and a treatment system, which enables suturing and knotting of soft tissue in the body by controlling the advancement of the needle assembly. The needle feeding component of the stitching instrument is provided with two control wires (ropes), and the two control wires (ropes) are respectively controlled to control the needle feeding component to move in different directions during operation, so that the needle feeding, the needle drawing and the threading are realized. The two control wires (ropes) are arranged on the control handle, so that the structure of the suture instrument and the control handle is complex, the connection is complex, the number of steps is increased, the compliance of operators is reduced, the volume of the connection part is increased, and the probability of wire detachment during operation is increased. The control of the two control ropes makes the control action of the control handle complex and easy to be disturbed. The control of the two control ropes requires two hands of an operator to control, the right hand of the operator of the endoscope is a main and continuous operation hand, and if the right hand is called to operate the control handle in cooperation with the left hand, the progress, speed, duration, accuracy, safety, persistence, attention and the like of treatment or examination by using the endoscope and the stitching instrument are adversely affected. In addition, if the trend change of the control rope in the control handle or the stitching instrument depends on right angles or other parts with non-curved smooth interfaces, the problems of increased running resistance of the control rope, laborious finger pull rod, inaccurate needle insertion, easy tissue damage, fatigue fracture of the control rope, abrasion of an endoscope cavity or forceps channel, reduced pull times of the test pull rod and the like can be caused.

Furthermore, the arrangement of the two control wires (ropes) completely prevents the possibility of turning of the C-shaped opening of the stitching instrument, and once the stitching instrument turns coaxially, the two wires (ropes) are crossed and wound, the stitching needle can not advance or retreat, and the operation can not be stopped, so that stitching can not be performed. Because the stitching instrument in the patent cannot coaxially rotate to randomly change the direction and the position of the C-shaped opening, the stitching direction and the position can be locally adjusted only by depending on the bending of the front end of the endoscope, and particularly in a narrow internal space, the stitching difficulty is increased, the stitching force is weakened, and the target tissue cannot be quickly, accurately and well matched or even stitched.

In particular, when the endoscope suture device is used for suturing in a human body, the visual field of an operator completely depends on a lens at the front end of the endoscope, the front end of the endoscope is sleeved with the suture device, the needle inserting, suturing and knotting operations of the endoscope suture device depend on a manipulation rope which continuously advances and retreats and does not have high elasticity, and experiments show that the manipulation rope is likely to be accumulated in front of the lens or the wire arranging action is increased. In order to avoid the situation, a torsion limiter is arranged in the control handle to prevent the control rope from being broken, but the production and manufacturing cost is increased, the volume of the control handle is increased, the distance between the pull rod of the control handle and the tiger mouth of an operator is overlarge, the ergonomics are not met, and the fingers of the operator are easy to fatigue and the operation is influenced. The handle is lifted and pulled out, and the action of other operating the control handle is assisted by the other hand.

If the diameter of the tubular part of the front end of the suture device sleeved on the endoscope is fixed, the suture device is difficult to be applied to endoscopes with various diameters, or the application range of the suture device with one specification is limited, or the manufacturing cost of the suture device with various specifications is increased, or the suture device with a rear passive adaptation to the endoscope with a new diameter is increased. The connecting part between the tubular part and the main shell is an arc tile-shaped plate, so that the change and adjustment of the diameter of the tubular part can be limited.

Disclosure of Invention

The present utility model is directed to overcoming at least one of the deficiencies of the prior art and providing a stapler, a treatment apparatus having a stapler, and a treatment device.

In order to achieve the above object, in one aspect, the present utility model provides a suture device comprising a main housing, a suture needle, a needle insertion assembly, and a needle withdrawal prevention assembly. The suture needle is arranged on the main shell in a sliding way, one end of the suture needle is connected with a suture line, and the other end of the suture needle is a tip. The needle feeding assembly is arranged on the main shell and comprises a driving piece, a resetting piece and needle feeding teeth, wherein the needle feeding teeth and the suture needle are in a detachable clamping relationship; the driving piece acts on the clamped needle inlet teeth and the suture needle to control the suture needle to advance and the reset piece to deform; when the driving piece is released, the clamping relation between the needle inlet tooth and the suture needle is released, and the reset piece drives the needle inlet tooth to reset; or the driving piece acts on the needle inlet tooth with the clamping relation released to enable the needle inlet tooth to move relative to the suture needle and the reset piece to deform; when the driving piece is released, the clamping relation between the needle inlet tooth and the suture needle is released, and the reset piece drives the needle inlet tooth and the suture needle to advance. The anti-back-out needle assembly is arranged on the main shell and forms a separable clamping relationship with the suture needle to prevent the suture needle from back-out. The single thread starts to insert the needle, so that the suture device has compact appearance, reduced resistance during operation, no blocking of visual field during suture, and difficult winding, and can be matched with the suture device to coaxially and randomly rotate, thereby accurately achieving the target suture position and realizing the optimal suture effect. The suture device of the utility model adopts crossing suture, and has no limitation on the size of a wound or the size of other target suture tissue range.

According to an embodiment of the utility model, the driving member is a control rope acting on the needle teeth, and the reset member is a reset spring or a metal elastic sheet acting on the needle teeth.

According to an embodiment of the utility model, the main housing is provided with a chute, the suture needle is arranged in the chute, the needle feeding assembly further comprises a sliding block arranged in the chute and positioned above the suture needle, the needle feeding teeth are telescopically assembled on the sliding block, and the driving piece and the reset piece are connected with the sliding block.

According to an embodiment of the present utility model, the needle assembly further includes an upper case and an upper cover sequentially covering the main case, a receiving cavity is formed between the upper case and the upper cover, the slider includes a slider body and a slider connecting portion, the slider connecting portion sequentially passes through the upper case and the upper cover, the reset member is disposed in the receiving cavity, one end of the reset member is connected to the slider connecting portion, the other end of the reset member is connected to the upper case or the upper cover, and the driving member is connected to the upper end of the slider connecting portion.

According to one embodiment of the utility model, the bottom of the sliding block is provided with a containing groove, the reset piece is arranged in the containing groove and limited between the sliding block and the suture needle, one end of the reset piece is connected with the side wall of the containing groove, and the other end of the reset piece is connected with the inner wall of the sliding groove of the main shell.

According to an embodiment of the utility model, the suture device further comprises an external forceps tube, the main shell comprises a first shell, a second shell and a third shell, the first shell is fixedly connected with the second shell, the third shell and the second shell are arranged on the first shell in a relative rotation mode, the external forceps tube is connected with the first shell in a transmission mode, and the relative rotation among the first shell, the second shell and the third shell is driven to coaxially and randomly change the orientation and the position of the C-shaped opening of the suture device. The endoscope itself may also have a forceps tube or other drive, however, the utility model is not limited in any way.

In another aspect, the present utility model also provides a treatment device comprising a stapler and a single wire (string) steering handle. The suture device is fixed at the front end of the endoscope and comprises a main shell, a suture needle, a needle inlet component and a needle withdrawal prevention component. The suture needle is arranged on the main shell in a sliding way, one end of the suture needle is connected with a suture line, and the other end of the suture needle is a tip. The needle feeding assembly is arranged on the main shell and comprises a driving piece, a resetting piece and needle feeding teeth, wherein the needle feeding teeth and the suture needle are in a detachable clamping relationship; the driving piece acts on the clamped needle inlet teeth and the suture needle to control the suture needle to advance and the reset piece to deform; when the driving piece is released, the clamping relation between the needle inlet tooth and the suture needle is released, and the reset piece drives the needle inlet tooth to reset; or the driving piece acts on the needle inlet tooth with the clamping relation released to enable the needle inlet tooth to move relative to the suture needle and the reset piece to deform; when the driving piece is released, the needle inlet tooth is clamped with the suture needle, and the reset piece drives the needle inlet tooth and the suture needle to advance. The anti-back-out needle assembly is arranged on the main shell and forms a separable clamping relationship with the suture needle to prevent the suture needle from back-out. The single wire (rope) control handle is fixed at the operating end of the endoscope, the driving piece of the stitching instrument is connected with the control handle, and the control handle controls the driving piece to control the advancing of the stitching needle.

According to an embodiment of the present utility model, a single wire (rope) steering handle includes a handle housing, a steering sheave, a clutch disc, and a pull rod. The control rope wheel is arranged in the handle shell, and a driving piece on the stitching instrument is a control rope and is connected with the control rope wheel. The clutch disc is detachably arranged on one side of the operating rope pulley, and a clamping gear ring meshed with the operating rope pulley is arranged on one side of the clutch disc, which is close to the operating rope pulley. The pull rod is connected with the clutch disc and can be connected with the handle shell in a resetting way.

According to one embodiment of the utility model, the treatment device further comprises a connecting ring, a loop ring, a hook forceps device and a knot pushing tube, wherein the connecting ring is sleeved on the endoscope, the loop ring is sleeved on the front end of the endoscope to perform tissue cutting action, the hook forceps device is used for performing tissue clamping action or suture hooking and pulling action at the front end of the endoscope, and the knot pushing tube is pushed forwards longitudinally and is horizontally and tightly knotted in a transverse mode.

In another aspect, the present utility model also provides a treatment apparatus comprising an endoscope and a treatment device. The treatment device is matched with an endoscope for use and comprises a control handle and a stitching instrument. The suture device is fixed at the front end of the endoscope and comprises a main shell, a suture needle, a needle inlet component and a needle withdrawal prevention component. The suture needle is arranged on the main shell in a sliding way, one end of the suture needle is connected with a suture line, and the other end of the suture needle is a tip. The needle feeding assembly is arranged on the main shell and comprises a driving piece, a resetting piece and needle feeding teeth, wherein the needle feeding teeth and the suture needle are in a detachable clamping relationship; the driving piece acts on the clamped needle inlet teeth and the suture needle to control the suture needle to advance and the reset piece to deform; when the driving piece is released, the clamping relation between the needle inlet tooth and the suture needle is released, and the reset piece drives the needle inlet tooth to reset; or the driving piece acts on the needle inlet tooth with the clamping relation released to enable the needle inlet tooth to move relative to the suture needle and the reset piece to deform; when the driving piece is released, the needle inlet tooth is clamped with the suture needle, and the reset piece drives the needle inlet tooth and the suture needle to advance. The anti-back-out needle assembly is arranged on the main shell and forms a separable clamping relationship with the suture needle to prevent the suture needle from back-out. The control handle is fixed at the operating end of the endoscope, the driving piece of the stitching instrument is connected with the control handle, and the control handle controls the driving piece to control the advancing of the stitching needle.

According to one embodiment of the utility model, the first shell is rotatably connected with the third shell through the rotary gear of the main shell, the transmission gear of the external forceps channel pipe is meshed with the rotary gear, and the external forceps channel pipe drives the first shell and the second shell to rotate through the transmission of the forceps channel pipe transmission gear and the rotary gear', so that the suture instrument can coaxially rotate in the C-shaped opening of the body, and particularly in a narrow body space.

In summary, the needle insertion assembly of the suturing device, the therapeutic apparatus with the suturing device and the therapeutic apparatus provided by the utility model comprises the driving member, the reset member and the needle insertion teeth, and the reset member deforms synchronously when the driving member drives the needle insertion teeth to move; when the driving piece is released, the restoring force of the restoring piece drives the needle inlet tooth to restore. The arrangement is such that the advancement of the needle is controlled by a single wire (cord) control handle

The operation can be realized by only controlling the control handle by one hand and the other hand can be used for continuous suturing by the endoscope operator during the operation. Furthermore, the operation of the single component also ensures that an operator does not need to control the control handle at a free sight line, and ensures that the attention of the operator always falls on the operation of the endoscope, thereby ensuring the safety and the continuity of the operation.

In addition, the control handle utilizes the engagement of clutch disc and control rope sheave of small-size to realize the increase of rotation torsion, has realized the miniaturization of control handle, reduce cost. Furthermore, the arc side wall of the control rope wheel is utilized to drag the control rope, so that the running resistance of the control rope is greatly reduced, the operation of the pull rod is easier, the compliance of an operator is good, the damage of the control rope to each part of the stitching instrument is greatly reduced, and the service life of the stitching instrument is prolonged. Furthermore, the control handle reduces the distance between the pull rod and the tiger mouth, reduces the spreading and hooking range of fingers, accords with the ergonomics of hands, is not easy to induce the injury of the tendon sheath or ligament or muscle of the hands of operators, and has the advantages of more relaxed operation, more accurate suture, more rapid operation, more durable continuous connection and slower finger fatigue.

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.

Drawings

FIG. 1A is a schematic view showing a structure of a suture device according to an embodiment of the present utility model.

Fig. 1B and 1C are schematic structural views of fig. 1A at another view angle.

Fig. 2 is an exploded view of fig. 1A.

FIG. 3 is a schematic view illustrating assembly of the suturing needle and needle access assembly of FIG. 1A.

Fig. 4A is a schematic structural view of a suture needle according to an embodiment of the present utility model.

Fig. 4B is a schematic structural diagram of fig. 4A at another view angle.

Fig. 4C shows a side view of fig. 4A.

FIGS. 5A-5F are schematic views of an anti-needle retraction assembly, a suturing needle, and an insertion assembly of a suturing device according to a first embodiment of the present utility model in various states during actuation.

Fig. 6A is a schematic structural view of a single wire (rope) control handle according to an embodiment of the present utility model.

Fig. 6B to 6D are schematic structural views of fig. 6A at another view angle.

Fig. 6E is an exploded view of fig. 6A.

Fig. 7 is an assembled schematic view of a front housing of a steering sheave and a handle on a single-wire (rope) steering handle according to an embodiment of the present utility model.

Fig. 8 is a schematic view showing a structure in which the operating rope of fig. 7 is connected to the operating sheave through a circular arc latch and a latch spring.

Fig. 9 is a schematic diagram showing the assembly of the steering rope, the circular arc latch and the latch spring of fig. 7.

Fig. 10A is a schematic diagram illustrating an assembly of a pull-up lever, a handle rear housing, a clutch disc, and a steering sheave according to an embodiment of the present utility model.

Fig. 10B is a schematic structural diagram of fig. 10A at another view angle.

Fig. 10C is an exploded view of fig. 10A.

Fig. 11A is an assembly schematic diagram of a pull-up lever, a front handle shell and a clutch disc of a control handle according to an embodiment of the utility model.

Fig. 11B is a schematic structural diagram of fig. 11A at another view angle.

FIG. 12 is a schematic view showing the attachment of the attachment ring to the endoscope and the push tube.

Fig. 13A is a schematic structural view of a suture device according to a second embodiment of the present utility model.

Fig. 13B and 13C are schematic structural views of fig. 13A at another view angle.

Fig. 14 is an exploded view of fig. 13A.

Fig. 15 is a schematic view illustrating assembly of the suturing needle and needle access assembly of fig. 13A.

FIGS. 16A-16F are schematic views of an anti-needle retraction assembly, a suturing needle, and an insertion assembly of a suturing device according to a first embodiment of the present utility model in various states during actuation.

FIG. 17A is a schematic view of a stapler according to a third embodiment of the present utility model.

Fig. 17B and 17C are schematic structural views of fig. 17A at another view angle.

Fig. 18 is an exploded view of fig. 17A.

Fig. 19A is an assembled schematic view of the second housing, the third housing, and the external crimp tube of fig. 17A.

Fig. 19B is a schematic structural view of fig. 19A at another view angle.

Fig. 20 is a partial enlarged view in fig. 19B.

Fig. 21A, 21B, 21C are schematic views of an adjustable tubular portion.

Detailed Description

The utility model provides a suture device, a single-wire (rope) control handle matched with the suture device, a treatment device consisting of the suture device and the control handle, and treatment equipment consisting of the treatment device and an endoscope matched with the treatment device. The stapler can be used to perform an in vivo suture on tissue of a mammal, whether or not the subject is a human and whether or not the sutured subject has vital signs. The stitching instrument provided by the utility model can be matched with an endoscope for use, and can also be matched with other devices capable of realizing steering guidance for use.

As shown in fig. 1A to 2, the present utility model provides a stapler 1 for piercing and stapling tissue for performing a surgical operation in a body. The suture device 1 comprises a main shell 11, a needle feeding assembly 12, a suture needle 13 and a needle withdrawing prevention assembly 14.

In this embodiment, the stapler 1 is used with an endoscope, and the main housing 11 includes a first housing 111 and a second housing 112. The endoscope is connected to the first housing 111, and the diameter of the first housing 111 is variable, and may be formed by self-locking teeth or/and a clip chain or/and a pin or/and a combination thereof, so as to adapt to the front end of the endoscope installed at different diameters, however, the utility model is not limited in any way. The needle insertion assembly 12, the suture needle 13, and the needle withdrawal prevention assembly 14 are provided in the second housing 112. The integrally formed main shell 11 enables the joint of the first shell 111 and the second shell 112 to be in smooth transition, and the joint has no edges and corners, so that the damage of the stitching instrument to internal tissues caused by touching is greatly reduced. However, the present utility model is not limited in any way to connect the first housing and the second housing. In other embodiments, the first housing and the second housing may be connected separately by a connector.

When the stapler of the present embodiment is used with a single-track endoscope, the first housing 111 may have two channels 1111, 1112 in the middle, the first channel 1111 may be sleeved on the distal end of the endoscope, and the second channel 1112 may be passed through by an external clamp tube to fix the external clamp tube. However, the present utility model is not limited in any way thereto. When the stapler is used with a dual-jaw endoscope, the first housing may have only one channel, allowing the stapler to be sleeved on the forward end of the endoscope. In another embodiment, the first housing may not have a channel, but rather may have other structures, such as a securing strap, a securing ring, etc., to secure the stapler to the distal end of the endoscope.

In this embodiment, the end of the first housing 111 near the second housing 112 is further provided with an anti-winding spool 1113, and the control cord as the driving member 121 passes through the anti-winding spool 1113, and then enters the first housing 111 from the inside. The anti-winding spool 1113 guides the slack handling cord between the first housing 111 and the second housing 112, avoiding winding of the handling cord in the slack state. However, the present utility model is not limited in any way thereto.

In this embodiment, as shown in fig. 2, the second housing 112 has a sliding slot 1121, and the suture needle 13 is disposed in the sliding slot 1121. Needle assembly 12 is disposed in chute 1121 and includes a driving member 121, a reset member 122, and a needle-feeding tooth 123, wherein needle-feeding tooth 123 is in a releasable engagement with needle 13. The driving member 121 acts on the needle-feeding teeth 123 to engage the needle-feeding teeth 123 with the needle 13, and the two are in a linkage state, so that the needle 13 is controlled to advance, and the resetting member 122 is deformed. When the driving member 122 is released, the engagement between the needle feeding teeth 123 and the suture needle 13 is released, and the reset member 122 drives the needle feeding teeth 123 to reset. In the next needle insertion, the driving member 122 again acts on the engaged needle insertion teeth 123 and the suture needle 13, and the driving member 122 drives the suture needle 13 to advance through the needle insertion teeth 123, and the continuous suture is realized by sequential circulation. However, the present utility model is not limited in any way thereto. In other embodiments, the locking structure of the needle feeding tooth and the suture needle can be adjusted, so that the driving piece can drive the needle feeding tooth with released locking relation to move relative to the suture needle when acting on the needle feeding tooth, and the reset piece is deformed at the same time; when the driving piece is released, the needle inlet tooth is clamped with the suture needle, and the reset piece drives the needle inlet tooth and the suture needle to advance.

In the suturing device provided by the utility model, the suture needle 13 can be advanced only by controlling the driving piece 121 by a single-wire (rope) control handle; in other words, the operator only needs to control by one hand, and the other hand can keep continuous operation on the endoscope, so that the operation is simpler and more convenient. Meanwhile, the arrangement also enables the second shell 112 to be provided with only one sliding groove 1121 for accommodating the suture needle 13 and the driving piece 112, so that the structure of the second shell 112 is greatly simplified, the manufacturing cost is reduced, and the volume of the suture instrument is reduced.

In this embodiment, the driving member 121 is a control cord, and the restoring member 122 is a restoring spring. However, the present utility model is not limited in any way thereto. In another embodiment, the driving member 121 may be replaced by other structures instead of a pull cord to control the suture needle. However, the present utility model is not limited in any way thereto. The resetting piece can also be replaced by a structure which is made of high polymer materials such as metal shrapnel or elastic silica gel and has certain restoring force or elasticity. However, the present utility model is not limited in any way thereto.

In this embodiment, the needle assembly 12 further includes a slider 124 disposed in the chute 1121 and located above the suture needle 13, and an upper case 125 and an upper cover 126 sequentially covering the second housing 112, the needle teeth 123 are telescopically assembled to the slider 124, and the driving member 121 and the reset member 122 are both connected to the slider. A receiving chamber 1251 is formed between the upper case 125 and the upper cover 126. The slider 124 includes a slider body 1241 and a slider connecting portion 1242, the slider connecting portion 1242 sequentially passes through the upper case 125 and the upper cover 126, the reset element 122 is disposed in the accommodating cavity 1251, one end of the reset element is connected to the slider connecting portion 1242, the other end of the reset element is connected to the upper case 125 or the upper cover 126, and the driving element 121 is connected to the upper end of the slider connecting portion 1242. The accommodating cavity 1251 formed by the upper case 125 and the upper cover 126 limits the deformation direction of the restoring member 122, so that the restoring member 122 is prevented from arching in other directions when deformed, and the direction of restoring force is influenced. This arrangement ensures that the return member 122 (return spring) deforms in the circumferential direction of the chute 1121, thereby smoothly carrying the slider 124 and the needle-feeding teeth 123 back along the chute 1121 during return, and further carrying the suture needle 13 forward stably. Preferably, the receiving chamber 1251 is provided to have a height approaching the diameter of the return member 122. However, the present utility model is not limited in any way thereto.

In the present embodiment, the reset element 122 is detachably connected to the slider connecting portion 1242 through the connecting block 127. Specifically, the connection block 127 is engaged with the slider connection part 1242, and one end of the reset member 122 is connected to the connection block 127. However, the present utility model is not limited in any way thereto. In other embodiments, the connection block 127 may be detachably connected to the slider connection portion by a connection member such as a screw. For the needle teeth 123, in this embodiment, the needle assembly 12 includes two needle teeth 123. However, the present utility model does not limit the number of needle teeth. In other embodiments, the number of needle teeth may be more than three.

As shown in fig. 2 and 5A, two needle-feeding teeth 123 are respectively assembled at two ends of the slider body 1241, the bottom ends of the needle-feeding teeth 123 are engaged with or separated from the suture needle 13, and a needle-feeding spring 128 is disposed between the top ends of the needle-feeding teeth 123 and the bottom of the upper case 125. When the suture needle 13 presses the bottom end of the needle-feeding tooth 123, the needle-feeding tooth elastic sheet 128 is deformed, the needle-feeding tooth 123 is contracted upward, and the needle-feeding tooth 123 and the suture needle 13 are separated. When the needle teeth 123 move to the clamping grooves 132 on the suture needle 13, the needle spring 128 is reset and pushes the needle teeth 123 to enable the bottoms of the needle teeth 123 to be clamped in the clamping grooves 132 of the suture needle. However, the utility model is not limited in any way to the retractable structure of the needle teeth. In other embodiments, other elastically deformable materials may be used in place of the needle spring.

Fig. 4A to 4C are schematic structural views of a suture needle according to the present embodiment. Suture 131 may be fixedly or removably secured to one end of needle 13, with the other end of needle 13 being pointed and penetrating tissue. The suture needle 13 has four clamping grooves 132 on one side and three clamping grooves 132 on the other side. By such arrangement, needle insertion of 60 ° and 120 ° of needle teeth can be realized, so that the advancing stroke control of the suture needle 13 is more flexible. If only 180 degrees of needle insertion of the suture needle is required, there is no need to provide such a plurality of slots. In this embodiment, in order to prevent the thickness of the suture needle from being reduced, the clamping grooves on both sides are arranged in a staggered manner, that is, the clamping grooves are not arranged on both sides of the same place in a completely corresponding manner. With this arrangement, the suture needle is not easily bent or broken. However, the present utility model is not limited in any way thereto.

The tooth portion of the needle-feeding tooth 123 is detachably engaged with the engagement groove 132 of the suture needle 13. The number of the card slots 132 is not limited in the present utility model. In this embodiment, each of the clamping grooves 132 has an asymmetric structure, one side is a slope a with a larger inclination angle for blocking, and the other side is a slope b with a smaller inclination angle, and the slope b is matched with the top slope of the tooth portion of the needle inlet tooth 123. The tip of the tooth portion of the needle feeding tooth 123 is inclined, and the tip inclined surface of the tooth portion of the needle feeding tooth 123 can slide out of the locking groove 132 through the inclined surface b under the action of the driving member 121, thereby releasing the locking relationship between the needle feeding tooth 123 and the suture needle 13. In this embodiment, the inclined plane a of each slot 132 forms an angle of 60 ° to 90 ° with one side surface c of the suture needle 13, and the inclined plane b of the other side forms an angle of 10 ° to 45 ° with the side surface c of the suture needle 13. However, the present utility model is not limited to any specific degree of inclination. In the present embodiment, the inclined plane b is not a plane, but an arc-shaped surface, which is more beneficial for the top end of the tooth portion of the needle inlet tooth 123 to slide out of the clamping groove 132 so as to release the clamping relationship between the needle inlet tooth 123 and the clamping groove 132.

The suture needle 13 of the present embodiment is a suture needle. Specifically, the tail of the suture needle 13 has a conical recess into which one end of the suture 131 is inserted, and then the tail of the suture needle 13 is pressed or glued, thereby fixing the suture 131 at the tail of the suture needle 13. However, the present utility model is not limited in any way thereto. In other embodiments, the suture may be removably secured to one end of the needle by other means, such as conventional threading. In this embodiment, the suture needle 13 may be made of stainless steel, and the diameter of the cross section of the suture needle 13 may be 8mm, 10mm, 12mm, etc., however, the present utility model is not limited thereto, and suture needles with appropriate dimensions may be selected according to the actual treatment requirements. In this embodiment, the length of the suture 131 is 30cm-60cm, and the suture 131 may be a polypropylene wire, a nylon wire, or the like, and the length, the wire diameter, and the material of the suture are not limited in the present utility model. In other embodiments, bioabsorbable sutures may be used, which may eliminate the need for removal, reducing the risk of secondary surgery in the patient.

In this embodiment, the needle retraction prevention assembly 14 is disposed on the second housing 112 and is in a releasable engagement with the suture needle 13 to prevent retraction of the suture needle 13. Needle insertion assembly 12 and needle retraction prevention assembly 14 are located on either side of needle 13.

In this embodiment, as shown in fig. 2, the needle retraction prevention assembly 14 includes a lower case 141, a needle retraction prevention tooth 142, and a needle retraction prevention tooth spring piece 143. The lower case 141 is covered on the second case 112, and the lower case 141 has two positioning holes 1411, two anti-withdrawal needle teeth 142 are respectively installed in the two positioning holes 1411, and the bottom ends of the anti-withdrawal needle teeth 142 abut against the anti-withdrawal needle tooth elastic sheet 143. In actual assembly, the suture needle 13 is first placed in the chute 1121 of the second housing 112, then the lower housing 141 with the anti-back needle teeth 142 is covered on the chute 1121, and then the anti-back needle teeth elastic sheet 143 is fixed on the lower housing 141.

The tip of the withdrawal prevention tooth 142 may be engaged with the engagement groove 132 of the suture needle 13. In the present embodiment, the tips of the two withdrawal prevention teeth 142 are provided as inclined surfaces. The inclination angle of the inclined surface is matched with that of the inclined surface b of the clamping groove 132, so that the needle withdrawal prevention tooth 142 can slide out of the clamping groove 132 through the inclined surface b under the action of the driving piece 121. Specifically, the needle-feeding teeth 123 and the needle-withdrawal preventing teeth 142 are located on both sides of the suture needle 13, and are detachably engaged with the engaging grooves 132 of the suture needle 13. Detachably engaged means herein that the engaged relationship may be formed or released. The needle-feeding teeth 123, the needle-withdrawing prevention teeth 142 and the suture needle 13 are in a detachable clamping relationship, so that complex functions (such as suturing of target suture tissues and knotting of suture threads) can be realized through a simple structure, and the suture device occupies a small volume and has low manufacturing cost. The tip shapes of the needle-feeding teeth 123 and the needle-withdrawal preventing teeth 142 are not limited in the present utility model. In other embodiments, the tips of the entry teeth 123 and the anti-back teeth 142 may be curved to facilitate sliding. The function of the present utility model can be achieved by a mutually engaging structure which can form an engaging relationship with the suture needle and release the engaging relationship, and the present utility model is intended to be protected.

In the present embodiment, the anti-withdrawal needle tooth elastic sheet 143 applies elastic pressure to the anti-withdrawal needle tooth 142 by means of its own elastic force, so that the anti-withdrawal needle tooth 142 can be displaced to slide out of the clamping groove 132 when the suture needle 13 moves, and the anti-withdrawal needle tooth 142 can be pressed by the elastic force to be clamped in the clamping groove 132.

To more clearly illustrate how the stapler according to the embodiment of the present utility model performs the stapling operation of the target stapling tissue, the following description is made with reference to fig. 5A to 5F. In order to clearly show the position of the internal parts, not all elements are shown in the figures. The "front", "back", "left" and "right" mentioned in the following description are based on the positional relationship in fig. 5A to 5F, specifically, the needle-feeding teeth are located on the front surface of the suture needle, and the corresponding anti-withdrawing teeth are located on the back surface of the suture needle. The left side (a) of each of FIGS. 5A-5F is the connection of needle insertion assembly 12, needle 13, and needle withdrawal prevention assembly 14 when drive 121 is pulled

A relationship diagram; the right side (b) is a connection diagram of the needle feeding assembly 12, the suture needle 13 and the anti-withdrawal needle assembly 14 after the reset piece 122 drives the needle feeding assembly 12 to reset by the release driving piece 121. Simultaneously define: from one end (left end of the suture needle in the figure) of the suture needle connected with the suture thread to the tip (right end of the suture needle in the figure), four clamping grooves on the front surface of the suture needle are a first front surface clamping groove, a second front surface clamping groove, a third front surface clamping groove and a fourth front surface clamping groove respectively; similarly, the four slots defining the back of the suture needle are a first back slot, a second back slot and a third back slot in sequence.

Fig. 5F (b) shows the positions of the two needle-advance teeth 123, the needle 13, and the two needle-retreat preventing teeth 142 of the suture device 1 in the initial state; at the same time, the state is also the position of the stitching instrument after one stitching is completed, namely, the stitching instrument returns to the initial position after one stitching is completed.

In the initial position, as shown in fig. 5F (b), the two needle-feeding teeth 123 of the needle-feeding assembly 12 are respectively engaged with the first front-side engaging groove and the third front-side engaging groove of the suture needle 13. One of the withdrawal prevention teeth 142 of the withdrawal prevention needle unit 14 (the withdrawal prevention tooth 142 located on the right side as shown in fig. 5F (b)) is engaged in the third rear surface catching groove of the suture needle 13. At this time, the driving member 121 (i.e. the control cord in the present embodiment) is pulled, since the two needle-feeding teeth 123 are respectively engaged in the two clamping grooves 132 of the suture needle 13, and the direction of the force is such that the tip of the needle-feeding teeth 123 is abutted against the side with the larger inclination of the clamping grooves 132, and at this time, the needle-feeding teeth 123 and the suture needle 13 are in linkage relationship. Under the action of external force, the driving piece 121 pulls the needle inlet teeth 123, so that the whole suture needle 13 is driven to advance in the clockwise direction; while compressing the restoring member 122. When the reset member 122 is compressed to the limit, the slider 124 cannot drive the needle-feeding tooth 123 to move forward, i.e. the operating cord cannot be pulled any more, and the right needle-withdrawing prevention tooth 142 is just clamped in the second back clamping groove, as shown in fig. 5A (a). For the anti-back teeth needle 132, when the driving member is pulled for the first time at the position shown in fig. 5F (b), the running direction of the anti-back teeth 142 relative to the suture needle 13 is counterclockwise (actually, the anti-back teeth 142 do not move, but the suture needle 13 moves clockwise), the anti-back teeth 142 located on the right side can slide out through the inclined surface of the third back clamping groove, and then move into the second back clamping groove in fig. 5A, which does not cause any obstruction to the running of the suture needle 13. In this process, the pointed end of the suture needle 13 is withdrawn from the second housing 112 through the tissue to be sutured.

After that, the operator releases the driving member 121, i.e., the clockwise force of the driving member 121 on the slider 124 disappears. At this time, the restoring member 122 provides a counterclockwise force to the slider 124 and the needle inlet teeth 123, and the two needle inlet teeth 123 will slide out and recede counterclockwise through the inclined surfaces of the first front clamping groove and the third front clamping groove, respectively, and the receding displacement is the displacement of the restoring member 122 under compression. After the reset, the needle inlet teeth 123 on the left side are suspended outside the tail end of the suture needle 13, and the needle inlet teeth 123 on the right side are clamped in the second front clamping groove, as shown in (b) of fig. 5A. In this process, the tip of the needle 13 is abutted against the side of the second back side groove having a larger inclination by the tip of the withdrawal preventing tooth 142 located on the right side, and the withdrawal preventing tooth 142 does not disengage from the second back side groove, and thus the needle 13 does not follow the needle-advancing tooth 123 to perform a backward movement.

Then, the operator pulls the operating rope for the second time, the needle inlet tooth 123 on the right side is clamped in the second front clamping groove, the direction of the force is that the top end of the needle inlet tooth 123 on the right side is abutted against one side with a larger inclination angle of the second front clamping groove, and at the moment, the needle inlet tooth 123 and the suture needle 13 are in clamping relation. The needle 13 continues to advance clockwise following the needle teeth 123 and gradually passes through the target tissue until the restoring member 122 is compressed to its limit, as shown in fig. 5B (a). When the operating rope cannot be pulled any more, the anti-withdrawal spike teeth 142 located on the right side are just clamped in the first back clamping grooves. Next, the operator releases the driving member 121 again, the compressed reset member 122 provides a counterclockwise force to the withdrawing needle 123, the slider 124 and the withdrawing needle 123 withdraw counterclockwise, and the needle inlet tooth 123 located on the right side is engaged with the first front clamping groove, as shown in fig. 5B (B); the needle-withdrawal prevention tooth 142 positioned on the right side is clamped in the first back clamping groove, and the suture needle 13 cannot be reversed.

Thereafter, the operator pulls the manipulation string for the third time, and the needle-advancing tooth 123 located on the right side links the suture needle 13, and the suture needle 13 continues to run clockwise and pass through the target suture tissue. When the three pulling cords reach the limit, the left anti-back teeth needle 142 is engaged with the third back side engaging groove of the suture needle as shown in fig. 5C (a). After the driving member 121 is released for the third time, as shown in fig. 5C (b), the slider 124 and the needle feeding teeth 123 move counterclockwise, the needle feeding teeth 123 on the left side are engaged with the fourth front clamping groove, the anti-back teeth 142 on the left side are engaged with the third back clamping groove, and the suture needle 13 does not back up.

Next, the operator pulls the manipulation cable for the fourth time, and the needle-feeding tooth 123 engaged with the left side of the fourth front clamping groove continues to drive the suture needle 13 to move clockwise to the compression limit of the reset piece 122, as shown in fig. 5D (a). At this time, the tip of the suture needle 13 passes through the target suture tissue and returns into the chute 1121 of the second housing 112; the anti-back tooth needle 142 positioned at the left side is clamped in the second back clamping groove of the suture needle. The fourth time the driving member 121 is released, as shown in fig. 5D (b), the slider 124 and the needle feeding teeth 123 are retracted counterclockwise, the needle feeding teeth 123 on the left side are engaged with the third front clamping groove, the needle 142 with the anti-retraction teeth on the left side is engaged with the second back clamping groove, and the suture needle 13 is not retracted.

Continuing to pull the operating rope for the fifth time, the needle inlet tooth 123 clamped in the third front clamping groove drives the suture needle 13 to continue to rotate clockwise into the sliding groove 1121 to the compression limit of the reset piece 122, as shown in fig. 5E (a). At this time, the withdrawal preventing tooth needle 142 located at the left side is engaged with the first back side engaging groove of the suture needle. The fifth time of releasing the driving member 121, as shown in fig. 5E (b), the slider 124 and the needle-feeding teeth 123 are retracted counterclockwise, the two needle-feeding teeth 123 are respectively engaged with the second front-side slot and the fourth front-side slot, the left anti-retraction needle 142 is engaged with the first back-side slot, and the suture needle 13 is not retracted.

Finally, the driving member 121 is pulled for the sixth time to the compression limit of the reset member 122, and the two needle feeding teeth 123 engaged in the second front clamping groove and the fourth front clamping groove continue to drive the suture needle 13 to advance until the tip of the suture needle is close to the needle outlet end of the sliding groove 1121, as shown in fig. 5F (a). At this time, the suture needle 13 drives the suture thread 131 through the tissue to be sutured, and one suturing is completed. And the anti-back tooth pin 142 positioned on the right side is clamped in the third back clamping groove. After that, the driving member 121 is released for the sixth time, as shown in fig. 5F (b), the reset member 122 drives the slider 124 and the needle-feeding teeth 123 to move backward counterclockwise, and the two needle-feeding teeth 123 are respectively engaged with the first front-side slot and the third front-side slot, so that the suture needle 13 does not move backward. The needle 13 is fully retracted into the second housing ready for the next stitch.

In the present embodiment, the compression displacement (i.e. the reset displacement) of the reset element 122 is equal to the circumferential distance (abbreviated as the slot pitch) between two adjacent slots 132 on the suture needle; the circumferential distance between the two needle-feeding teeth 123 is twice the space between the two slots, so that at least one needle-feeding tooth is clamped on one of the front slots of the suture needle after each reset, so that the needle-feeding teeth and the suture needle can be vertically and quickly clamped when the manipulation rope is pulled for the next time, and the suture needle 13 is immediately driven to move forward. However, the present utility model is not limited in any way thereto. In other embodiments, the needle-feeding teeth can be located between the two front-side clamping grooves after resetting, and the needle-feeding teeth are pressed by the suture needle to be compressed upwards. When the operation rope is pulled next time, the compressed needle inlet teeth move a certain distance along the surface of the suture needle until at least one needle inlet tooth is clamped in one of the front clamping grooves to form a clamping relationship. For the two anti-back-out teeth needles, the requirement that one anti-back-out teeth needle can be clamped in one of the back clamping grooves at any time after the driving piece is pulled is only met, so that the suture needle is prevented from backing up. The six operations realize one-time suturing of the suture needle, and the above six steps are repeated so as to perform suturing of target suture tissue or knotting operation of suture. However, the number of pull cords required for one suture is not limited in the present utility model. In other embodiments, the number of pull cords required for a single suture may be adjusted by adjusting the compression displacement of the restoring member and the spacing of the detents on the suture needle.

The actuation of the driver 121 may be performed by manipulating the handle to tighten or release. However, the present utility model is not limited in any way thereto. In other embodiments, the driving member 121 may be other components capable of driving the slider to move.

In another aspect, the present utility model also provides a treatment device comprising the above-mentioned stapler 1 and a steering handle 2, which is used in conjunction with an endoscope 200. The stapler 1 is fixed to the distal end 202 of the endoscope. The control handle 2 is fixed to the operating end 201 of the endoscope, the driving member 121 of the stapler is connected to the control handle 2, and the control handle 2 controls the driving member 121 to control the advancement of the suture needle 13.

In the present embodiment, as shown in fig. 6A to 11, the steering handle 2 includes a handle housing 21, a steering sheave 22, a clutch disc 23, and a tie rod 24. The operating sheave 22 is provided in the handle housing 21, and a driving element 121 on the stapler is an operating rope and is connected to the operating sheave 22. The clutch plate 23 is detachably disposed on one side of the operating sheave 22, and a latch ring 231 engaged with the operating sheave 22 is provided on one side of the clutch plate 23 adjacent to the operating sheave 22. The pull rod 24 is connected to the clutch plate 23 and is connected to the handle housing 21 in a resettable manner.

As shown in fig. 11A and 11B, the pull rod 24 is connected to the handle housing 21 by a tension spring 25 in a resettable manner. However, the present utility model is not limited in any way thereto. In other embodiments, the tie rod may also provide a torsion spring coupled to the handle housing to effect return.

In the steering handle 2 provided in this embodiment, the clutch disc 23 and the steering sheave 22 are in a separable structure. When it is necessary to drive the suture needle 13 of the suture device 1 forward, the clutch disc 23 is connected to the operating sheave 22, and the two are in linkage relation and tension the operating rope. The operator pulls the pull rod 24, and the pull rod 24 drives the operating rope wheel 22 to rotate through the clutch disc 23, so that the operating rope on the stitching instrument 1 is pulled. When the operating cord is pulled to the limit position of the return member 122, the operating cord cannot be pulled any more. At this time, the clutch disc 23 and the operating sheave 22 are separated, the operating cord is in a relaxed state, and the relaxed operating cord is pulled back along with the slider 124 by the reset member 122 on the stapler. The separated clutch disc 23 is driven by the tension spring 25 to reset along with the pull rod 24, and the clutch disc and the control rope wheel 22 are restored to a linkage state after reset.

Specifically, as shown in fig. 6E, the handle housing 21 includes a front case 211, a middle case 212 and a rear case 213 sequentially provided, a pull rod 24 is connected to the rear case 213 through a tension spring 25, a rear shaft of the clutch disc 23 is sleeved on the pull rod 24 through the middle case 212, four compression springs 26 are provided between the clutch disc 23 and the middle case 212, a front side of the clutch disc 23 is engaged with the operating sheave 22, and a front shaft of the clutch disc 23 is respectively passed through the operating sheave 22 and the front case 211. When the driving piece 121 is in a driving state, the four pressure springs 26 push the clutch disc 23 so as to enable the clutch disc 23 to be meshed with the control rope pulley 22; when the driving member cannot be pulled any more, the four compression springs 26 are compressed by pressing the front shaft of the clutch disc 23 of the front housing 211, the clutch disc 23 is separated from the operating sheave 22 in the axial direction, the operating rope is in a loose state, and the restoring member 122 on the stapler pulls back the loose driving member 121 through the sliding block 124. Finally, the pull rod 24 is released, and the pull rod 24 drives the clutch disc 23 to reset under the action of the tension spring 25. However, the present utility model does not limit the number of compression springs; meanwhile, the separation mode of the clutch disc is not limited.

The clutch disc 23 not only realizes the rotation of the operating rope pulley 22 along with the pull rod 24, but also limits the operating rope pulley 22 to avoid the anticlockwise rotation of the operating rope pulley 22; furthermore, the clutch disc 23 is engaged with the control rope wheel 22 in a matched manner through the clamping teeth, so that the mechanical principle is fully utilized, the mechanical torsion is increased, and the pull rod 2 is more labor-saving. Preferably, in the present embodiment, the operating sheave 22 has a click ring 224 corresponding to the click ring 231, and the click on the click ring 231 is inserted into the click groove on the click ring 224 when engaged. However, the present utility model is not limited in any way thereto. In other embodiments, the operating sheave may be provided with a raised latch that engages the latch ring. In the present embodiment, as shown in fig. 7 to 9, the steering handle 2 further includes a steering rope fixing member 27 provided in the steering sheave 22, and the steering rope as the driving member 121 is connected to the steering sheave 22 through the steering rope fixing member 27. The operating rope fixing member 27 includes a circular arc latch 271 and a latch spring 272, and the circular arc latch 271 is connected to the inside of the operating sheave 22 by the latch spring 272. The operating sheave 22 has a side hole 221 and a latch runner 223. The drive member 121 extends into the operating sheave 22 through the side aperture 221 and fits over the circular latch 271, which ensures that the drive member 121 does not disengage from the operating sheave 22 during pulling. When fixing the driving member 121, the operator first pulls the circular arc latch 271 clockwise along the latch chute 223; then, the driving member 121 is inserted into the operating sheave 22 from the side hole 221 of the operating sheave 22, the fixing ring at the front end of the driving member 121 is aligned with the end of the circular arc latch 271, and then the circular arc latch 271 is released, the latch spring 272 drives the circular arc latch 271 to reset along the latch chute 223, and the front end of the circular arc latch 271 passes through the fixing ring at the front end of the operating sheave 22. In order to facilitate checking the fixing state of the driving member 121, in this embodiment, the operating sheave 22 further has a viewing hole 222. The arrangement of the control rope fixing piece 27 enables the driving piece 121 to change along the side direction of the circular arc control rope wheel in the control handle 2, so that the running resistance of the driving piece 121 is greatly reduced, the pull rod is pulled back by fingers very easily, and the operation is very convenient. However, the present utility model is not limited in any way thereto.

Further, in this embodiment, the steering handle 2 further includes a guiding cylindrical pin 28 disposed on one side of the steering sheave 22 for guiding the driving member 121, and the driving member 121 bypasses the guiding cylindrical pin 28 and enters the side hole 221. However, the present utility model is not limited in any way thereto.

After installation, the length of the drive member 121 reserved outside the steering sheave 22 may vary due to matching different types of endoscopes, and there may be an excessive amount of reserved, resulting in the drive member 121 being in a relaxed state. At this time, the clutch disc 23 is pressed to separate the clutch disc 23 from the operating sheave 22, and then the operating sheave 22 is rotated counterclockwise to tighten the surplus driver 121 in the operating sheave 22; after tightening, the clutch disc 23 is released, and the clutch disc 23 is engaged with the operating sheave 22.

In this embodiment, the front shell 211 and the rear shell 213 are both square structures, and compared with a circular shell, the square shell structure can make the volume of each internal component smaller, so the overall appearance is smaller, and the package is smaller, thereby greatly reducing the cost. In addition, the square shell also reduces the distance between the pull rod 24 and the tiger mouth of the operator, reduces the range of finger unfolding and hooking, reduces the operation resistance, accords with the ergonomics of the hand, is not easy to induce the injury of the tendon sheath or ligament or muscle of the hand of the operator, and has the advantages of more relaxed operation, more accurate suture, quicker operation, longer continuous connection and slower finger fatigue. However, the present utility model does not limit the structure of the handle housing in any way.

In another aspect, the present utility model also provides a treatment apparatus comprising the treatment device mentioned above and an endoscope 200. The treatment device is used in conjunction with an endoscope 200, and includes the above-mentioned stapler 1 and the manipulation handle 2.

In this embodiment, the therapeutic device further comprises an external forceps tube 3, a connecting ring 4, a knot pushing tube 5, a loop collar and a hook forceps device. The connecting ring 4 is sleeved on the endoscope 200, and the diameter of the connecting ring 4 can be variable, and the connecting ring can be composed of self-locking teeth or/and a clamping chain or/and a pin or/and a combination of the self-locking teeth or/and the clamping chain or/and the pin or/and the combination of the self-locking teeth or/and the pin so as to adapt to the front end of the endoscope with different diameters, however, the utility model is not limited in any way. The loop 4 performs a tissue cutting operation at the distal end of the endoscope 200, and the hook forceps performs a tissue grasping operation or a suture hooking operation at the distal end of the endoscope 200, and the knot pushing tube is pushed forward longitudinally and knots are horizontally assisted.

Specifically, as shown in fig. 12, the external forceps tube 3 is fixed to the tube portion of the endoscope 200 by the connection ring 4, and the push-junction tube 5 is fitted into the inner hole of the external forceps tube 3. Another attachment ring 4 is fitted over the distal end 202 of the endoscope 2 and the stapler 1 is fitted over the attachment ring 4 to secure the stapler 1 to the distal end 202 of the endoscope 200. The head end 31 of the external crimp tube 3 is inserted into the stapler 1. The connecting ring 4 in this embodiment can not only serve to fix the external forceps tube 3 and the endoscope 200, but also increase the connection strength of the distal end 202 of the endoscope 200, so that the stapler 1 can be firmly fixed to the distal end 202 of the endoscope 200. In this embodiment, the connecting ring 4 is made of silica gel and has elasticity. However, the material of the connecting ring is not limited in the present utility model.

Thereafter, the steering handle 2 is mounted to the operating portion of the endoscope proximal end 201, and the steering handle 2 and the endoscope 200 are firmly fixed together by the handle fastener. If the handle fastener is a strap, the manipulation handle 2 and the endoscope 200 are fastened by bypassing the strap around the endoscope 200. However, the shape of the handle fastener of the present utility model is not limited in any way, and any component that can achieve a fixing function may be used as the handle fastener.

The endoscope is started, and under the monitor, the direction of the suture instrument 1 is adjusted to be that the C-shaped opening is downward. After the position is adjusted, the suture device is locked until the step surface of the collar of the suture device abuts against the front end of the endoscope.

The hook jaw is inserted from the insertion jaw of the endoscope, through the jaws to the distal end 202 of the endoscope, and then the driver 121 of the stapler is gripped, and the driver 121 located near the distal end 202 is pulled into the jaws. The hook jaw is then removed and pulled out of the insertion jaw, thereby bringing one end of the driver 121 out of the insertion jaw. The carried-out driving element 121 is then inserted into the side hole 221 of the operating sheave 22 of the operating handle 2 and is then fixed to the operating rope fixing element 27.

The snare loop performs a snare on the tissue at the tip of the endoscope, or performs a cut on the tissue by an electric current. Then, the target suture tissue is sutured using the stapler provided in this embodiment. The collar ring can be inserted through the forceps channel of the endoscope itself, or can be inserted through the forceps channel of the endoscope outside, and is not limited in any way.

The hook forceps device performs tissue clamping action or suture hooking action at the front end of the endoscope, and finally can clamp the two ends of the suture so as to complete suture knotting action. The knot pushing tube pushes forward longitudinally at the front end of the endoscope and horizontally tightens and knots in a transverse mode. The hook forceps and the pushing tube can be inserted through the forceps channel of the endoscope, and can also be inserted through the forceps channel of the endoscope, which is not limited in any way. In actual use, the two pliers can simultaneously extend into two pliers hooks or the knot pushing pipe for working, and only one pliers hooks or the knot pushing pipe can be used for working. In the embodiment, the front end of the hook forceps is in a forceps shape with hooks, the length of the pushing and knotting pipe is 500-2500mm, the inner diameter is 0.5-3.5mm, the wall thickness is 0.05-2.50mm, and the hook forceps are made of medical polyamide or polytetrafluoroethylene and other high polymer materials. However, the present utility model is not limited in any way thereto.

Through circle lantern ring, stapler, hook pincers ware and pushing away knot pipe, the treatment device and the treatment facility that provide of this embodiment can realize the cutting of tissue, sew up, multiple functions such as knot. In addition, the treatment device and the treatment equipment provided by the embodiment can also comprise biological glue, plugging glue, a bracket, anastomotic nails and anastomotic clips, so that the function diversification is realized.

In another embodiment, the endoscope may be a dual-jaw endoscope. At this time, no external clamp pipe is required to be specially installed. Because the endoscope has two forceps channels, the knot pushing tube is only required to be inserted into the hollow forceps channels.

Next, how the suturing device of the present utility model performs suturing will be described.

First, the hook forceps are inserted from the insertion jaw of the endoscope 200, passed through the jaws to the tip 202 of the endoscope, and then find and clamp the suture 131. The other hook forceps is inserted into the knot-pushing tube 5 to the front end 202 of the endoscope, clamping the edge of the target suture tissue, and is retracted in a proper manner so that the target suture tissue is in the middle of the C-shaped opening of the stapler. Then, the pull rod 24 is hooked to enable the suture needle 13 to be inserted, when the suture needle is inserted to the limit position of the reset piece 122, the front shaft of the clutch disc 23 on the control handle 2 is pressed to loosen the driving piece 121, and the suture needle assembly 12 is retracted under the action of the reset piece 122. The above steps are then cycled until the needle 13 rotates 360 ° in the slot 1121, returning to the original position. The above steps are repeated to perform the stitching continuously.

Then, the hook clamp for clamping the head end of the suture 131 is released, and after the suture needle 13 passes over and half-knotted, the suture needle moves to the front of the head end of the suture 131 rapidly, and the suture 131 is clamped again. The two hook pliers are pulled tightly, meanwhile, observation is carried out through a monitor, and the knot is gradually pushed longitudinally by the knot pushing tube 5 and is horizontally assisted to achieve knot tying. In order to ensure that the knotted knot is firm enough, the knotting operation in the section can be repeated to finish the triple knot. The knot pushing tube 5 and the two hook forceps are withdrawn, the endoscope is cut, and the endoscope is inserted into an empty forceps channel or an external forceps channel of the endoscope, and the suture is cut. After the suturing is completed, the endoscope and auxiliary tools are withdrawn, and the stapler is removed.

Example two

This embodiment is substantially the same as the first embodiment and its variations, except that: the position of the return element 122 within the needle assembly 12 is different, and the manner in which the needle teeth 123 are retracted is different without the upper housing being provided within the needle assembly 12.

Specifically, in the present embodiment, as shown in fig. 14, the bottom of the slider 124 has a circular arc accommodating groove 1420, the restoring member 122 is disposed in the accommodating groove 1240 and is limited between the slider 124 and the suture needle 13, one end of the restoring member 122 is connected to the side wall of the accommodating groove 1240, and the other end is connected to the inner wall of the chute 1121 of the second housing 112. The upper cover 126 is covered on the second housing 112. Similarly, the first housing 111 is connected to the second housing 112 by integral molding.

In this embodiment, the restoring member 122 is disposed in the accommodating groove 1240, and the bottom wall of the sliding block 124 limits the deformation direction of the restoring member 122, so as to ensure that the restoring member 122 deforms along the circumferential direction of the sliding slot 1121. Compared with the embodiment, the upper shell is adopted to accommodate the reset piece, the accommodating groove 1240 is arranged in the embodiment, so that the upper shell is not required to be installed on the stitching instrument, the size of the whole stitching instrument is greatly reduced, the miniaturization of the stitching instrument is realized, and meanwhile, the manufacturing cost is greatly reduced.

Further, in the present embodiment, the needle teeth 123 are connected to the upper cover 126 by a needle spring 129. Specifically, the bottom end of the needle feeding spring 129 is engaged with the engagement groove of the suture needle 13, and the upper end of the needle feeding tooth 123 is connected to the needle feeding spring 129. When the needle teeth 123 are engaged with the engagement grooves of the suture needle 13, the needle teeth 129 are in a natural extended state, and when the needle teeth 123 move along the suture needle surface, the needle teeth 129 are compressed, and the needle teeth 123 are in a contracted state. However, the present utility model is not limited in any way thereto. In other embodiments, the retraction of the needle teeth may be achieved by means of a needle spring. FIGS. 16A-16F are schematic views of an anti-needle retraction assembly, a suturing needle, and an insertion assembly of a suturing device according to a first embodiment of the present utility model in various states during actuation. The movement state is the same as that of the first embodiment and the stitching principle is the same as that of the first embodiment.

Similarly, as in the first embodiment, the needle retraction prevention assembly 14 further includes a lower case 141, a needle retraction prevention tooth 142, and a needle retraction prevention tooth spring piece 143. The first housing 111 also has an anti-wind-up cleat 1113 thereon.

Example III

The present embodiment is basically the same as the second embodiment and its variations, except that: the main housing 11' is different in structure.

As shown in fig. 17A to 20, the suture device further includes an external forceps tube 3', the main housing 11' includes a first housing 111', a second housing 112', and a third housing 113', the third housing 113' is disposed opposite to the second housing 112' on the first housing 111', and the external forceps tube 3' is connected to the first housing 111' in a transmission manner so as to drive the first housing 111' and the second housing 112' to rotate relative to the third housing 113'.

In this embodiment, the first housing 111 'and the second housing 112' are integrally formed, the first housing 111 'is rotatably sleeved on the front end of the third housing 113', and the first housing 111 'has an anti-winding strut 1113'. However, the present utility model is not limited in any way thereto. In other embodiments, the first housing and the second housing may also be fixedly connected by a connecting member.

As shown in fig. 18, in the present embodiment, the main housing 11' further includes a rotation gear 114', and the first housing 111' is rotatably connected to the third housing 113' through the rotation gear 114'. The external crimp tube 3' includes a crimp tube body 31' and crimp tube drive teeth 32'. The crimp tube body 31' fits into the second channel 1112' on the first housing 111' and the crimp tube drive teeth 32' engage the rotary gear 114'. The external forceps tube 3' drives the first shell 111' and the second shell 112' to rotate through the transmission of the forceps tube transmission gear 32' and the rotary gear 114'. The arrangement greatly facilitates the adjustment of the orientation of the C-shaped opening of the stitching instrument in the patient, and is particularly convenient to use in a narrow internal space. However, the present utility model is not limited in any way to the transmission structure between the first housing and the external gateway tube or the transmission with the gateway tube of the endoscope itself and the respective relative movements. Other mechanical structures capable of realizing synchronous linkage to drive the second shell to rotate are within the protection scope of the utility model.

In this embodiment, as shown in fig. 18 and 20, the external pipe clamp 3' further includes a positioning member 33', and the positioning member 33' locks the external pipe clamp 3' so as not to rotate or unlock the external pipe clamp 3'. Specifically, the positioning member 33 'includes a positioning pin 331', a positioning pin spring 332', and a positioning pin pulling cord 333'; the clamp tube driving teeth 32' have a plurality of circumferential positioning holes 321' thereon and one side of the second channel 1112' on the first housing 111' has a positioning member mounting portion 1114'. The upper end of the positioning pin 331' is fixed to the positioning piece mounting portion 1114' by a positioning pin spring 332', and the lower end thereof is opposite to the plurality of circumferential positioning holes 321' on the pipe drive teeth 32 '. The dowel pull cord 333 'is connected to dowel 331'. The positioning pin 331' can be extended and contracted along the positioning member mounting portion 1114' by pulling the positioning pin pulling rope 333', so that the bottom end of the positioning pin 331' is engaged with or separated from the circumferential positioning hole 321 '. When the positioning pin 331' is engaged with the circumferential positioning hole 321' of the pipe drive tooth 32', the external pipe 3' is locked against rotation, and the first housing 111', the second housing 112', and the third housing 113' are fixed against rotation. When the locating pin pulling rope 333' is pulled up to disengage the bottom end of the locating pin 331' from the circumferential locating hole 321', the clamp pipe driving gear 32' is unlocked, which can drive the first housing 111', the second housing 112' to rotate 113' relative to the third housing. However, the present utility model is not limited in any way with respect to the arrangement position and structure of the positioning member. In other embodiments, the positioning member may be provided on the rotary gear 114' to provide a driving relationship between the first housing and the outer caliper tube by locking or unlocking the rotary gear.

In the present embodiment, the locating pin pulling cord 333 'bypasses the locating member mounting portion 1115' downward, and then passes through the clamp tube body 31 'from bottom to top, so as to facilitate lifting the locating pin pulling cord 333' upward. The locating pin pull rope 333' can be fixed on the control handle or can be independently arranged outside the control handle. The present utility model is not limited in any way.

In this embodiment, the drive teeth 32 'are also covered with a protective cover 34'. However, the present utility model is not limited in any way thereto.

Example IV

For larger wounds or other target suturing tissues, after the target tissue on one side of the wound is injected and extracted by using the suturing device according to the embodiment, the C-shaped opening of the suturing device is moved to the tissue on the opposite side of the larger wound or the target tissue, the pull rod 24 is hooked to enable the suturing needle 13 to be injected, when the suturing needle is injected to the limit position of the reset piece 122, the front shaft of the clutch disc 23 on the control handle 2 is pressed to loosen the driving piece 121, the needle injection assembly 12 is retracted under the action of the reset piece 122, and then the steps are circulated until the suturing needle 13 rotates 360 degrees in the chute 1121, and returns to the initial position. Repeating the above steps may allow continuous cross-suturing of larger wounds or other target tissue.

In summary, the needle insertion assembly of the suturing device, the therapeutic apparatus with the suturing device and the therapeutic apparatus provided by the utility model comprises the driving member, the reset member and the needle insertion teeth, and the reset member deforms synchronously when the driving member drives the needle insertion teeth to move; when the driving piece is released, the restoring force of the restoring piece drives the needle inlet tooth to restore. The arrangement enables the suture needle to advance only by controlling one part of the driving piece, and an endoscope operator only needs to control the control handle by one hand during operation, and the suture can be continuously performed by the other hand. Furthermore, the operation of the single component also ensures that an operator does not need to control the control handle at a free sight line, and ensures that the attention of the operator always falls on the operation of the endoscope, thereby ensuring the safety and the continuity of the operation. The arrangement greatly facilitates the adjustment of the orientation of the C-shaped opening of the stitching instrument in the patient, thereby stitching the target tissue in a narrow internal space rapidly, accurately and well aligned.

In addition, the control handle utilizes the engagement of clutch disc and control rope sheave of small-size to realize the increase of rotation torsion, has realized the miniaturization of control handle, reduce cost. Furthermore, the arc side wall of the control rope wheel is utilized to drag the control rope, so that the running resistance of the control rope is greatly reduced, the operation of the pull rod is easier, the compliance of an operator is good, the damage of the control rope to each part of the stitching instrument is greatly reduced, and the service life of the stitching instrument is prolonged. Furthermore, the control handle reduces the distance between the pull rod and the tiger mouth, reduces the spreading and hooking range of fingers, accords with the ergonomics of hands, is not easy to induce the injury of the tendon sheath or ligament or muscle of the hands of operators, and has the advantages of more relaxed operation, more accurate suture, more rapid operation, longer continuous connection and slower finger fatigue.

Although the utility model has been described with reference to the preferred embodiments, it should be understood that the utility model is not limited thereto, but rather may be modified and varied by those skilled in the art without departing from the spirit and scope of the utility model.

Claims

1. A stapler, comprising:

a main housing;

the suture needle is arranged on the main shell in a sliding way, one end of the suture needle is connected with a suture thread, and the other end of the suture needle is a tip; a plurality of clamping grooves are formed in two sides of the suture needle;

the needle feeding assembly is arranged on the main shell and comprises a single driving piece, a reset piece and needle feeding teeth, wherein the needle feeding teeth are in separable clamping relation with clamping grooves on one side of the suture needle; the driving piece acts on the clamped needle inlet teeth and the suture needle to control the suture needle to advance and the reset piece to deform; when the driving piece is released, the clamping relation between the needle inlet tooth and the suture needle is released, and the reset piece drives the needle inlet tooth to reset; or the driving piece acts on the needle inlet tooth with the clamping relation released to enable the needle inlet tooth to move relative to the suture needle and the reset piece to deform; when the driving piece is released, the needle inlet tooth is clamped with the suture needle, and the reset piece drives the needle inlet tooth and the suture needle to advance;

The needle withdrawing prevention component is arranged on the main shell and forms a separable clamping relationship with a clamping groove on the other side of the suture needle, so as to prevent the suture needle from withdrawing.

2. The stapler of claim 1, wherein the drive member is a steering cord acting on the needle teeth and the return member is a return spring or metal spring plate acting on the needle teeth.

3. The stapler of claim 1, wherein the main housing has a chute, the needle is disposed in the chute, the needle insertion assembly further comprises a slider disposed in the chute above the needle, the needle insertion teeth are telescopically mounted to the slider, and the drive member and the reset member are connected to the slider.

4. The stapler according to claim 3, wherein the needle insertion assembly further comprises an upper case and an upper cover sequentially covered on the main case, a receiving chamber is formed between the upper case and the upper cover, the slider comprises a slider body and a slider connecting portion sequentially passing through the upper case and the upper cover, the reset member is disposed in the receiving chamber, one end thereof is connected to the slider connecting portion, the other end thereof is connected to the upper case or the upper cover, and the driving member is connected to the upper end of the slider connecting portion.

5. The suturing device of claim 3 wherein the slider has a receiving slot in its bottom portion, a reset member disposed in the receiving slot and positioned between the slider and the suturing needle, one end of the reset member being connected to a side wall of the receiving slot and the other end of the reset member being connected to an inner wall of the chute of the main housing.

6. The stapler of claim 1, further comprising an external crimp tube, wherein the main housing comprises a first housing, a second housing, and a third housing, wherein the first housing is coupled to the second housing, the third housing is rotatably coupled to the second housing relative to the first housing, and wherein the crimp tube is drivingly coupled to the first housing to drive relative rotation between the first housing, the second housing, and the third housing to thereby selectively change the orientation and position of the C-shaped opening of the stapler.

7. A therapeutic device for use with an endoscope, the therapeutic device comprising:

a stapler secured to a distal end of an endoscope, the stapler comprising:

a main housing;

the suture needle is arranged on the main shell in a sliding way, one end of the suture needle is connected with a suture thread, and the other end of the suture needle is a tip;

the needle feeding assembly is arranged on the main shell and comprises a driving piece, a resetting piece and needle feeding teeth, wherein the needle feeding teeth and the suture needle are in a detachable clamping relationship; the driving piece acts on the clamped needle inlet teeth and the suture needle to control the suture needle to advance and the reset piece to deform; when the driving piece is released, the clamping relation between the needle inlet tooth and the suture needle is released, and the reset piece drives the needle inlet tooth to reset; or the driving piece acts on the clamping relation to release the needle inlet tooth so as to enable the needle inlet tooth to move relative to the suture needle and the reset piece to deform; when the driving piece is released, the needle inlet tooth is clamped with the suture needle, and the reset piece drives the needle inlet tooth and the suture needle to advance;

The needle withdrawal prevention assembly is arranged on the main shell and forms a separable clamping relationship with the suture needle to prevent the suture needle from withdrawing;

the control handle is fixed at the operation end of the endoscope, the driving piece of the stitching instrument is connected to the control handle, and the control handle controls the driving piece to control the advancing of the stitching needle.

8. The treatment device of claim 7, wherein the steering handle comprises:

a handle housing;

the control rope wheel is arranged in the handle shell, and a driving piece on the stitching instrument is a control rope and is connected with the control rope wheel;

the clutch disc is detachably arranged on one side of the operating rope pulley, and a clamping gear ring meshed with the operating rope pulley is arranged on one side of the clutch disc, which is close to the operating rope pulley;

the pull rod is connected with the clutch disc and can be connected with the handle shell in a resetting mode.

9. The treatment device of claim 7, further comprising a connector ring, a loop collar, a hook forceps device, and a knot pushing tube, wherein the connector ring is sleeved on the endoscope, the loop collar performs a tissue cutting action at the front end of the endoscope, and the hook forceps device performs a tissue grasping action or a suture hooking action at the front end of the endoscope.

10. A therapeutic apparatus, comprising:

An endoscope;

a treatment device which is matched with the endoscope for use, the treatment device comprises a stitching instrument and a control handle,

a stapler is secured to a leading end of an endoscope, the stapler comprising:

a main housing;

the needle feeding assembly is arranged on the main shell and comprises a driving piece, a resetting piece and needle feeding teeth, wherein the needle feeding teeth and the suture needle are in a detachable clamping relationship; the driving piece acts on the clamped needle inlet teeth and the suture needle to control the suture needle to advance and the reset piece to deform; when the driving member is released, the needle is advanced

Releasing the clamping relation with the suture needle, and driving the needle inlet tooth to reset by the reset piece; or the driving piece acts on the needle inlet tooth with the clamping relation released to enable the needle inlet tooth to move relative to the suture needle and the reset piece to deform;

when the driving piece is released, the needle inlet tooth is clamped with the suture needle, and the reset piece drives the needle inlet tooth and the suture needle to advance; the needle withdrawal prevention assembly is arranged on the main shell and forms a separable clamping relationship with the suture needle to prevent the suture needle from withdrawing;