CN210784484U - T-shaped thread hooking device - Google Patents

Abstract

The utility model discloses a T-shaped thread hooking device, which comprises a T-shaped handle internally provided with a holding cavity, wherein a thread hooking needle tube is arranged in the holding cavity, the head end of the thread hooking needle tube extends to the outside of the T-shaped handle and is provided with a thread hooking needle head, the tail end of the T-shaped handle is slidably provided with a pressing head, an axial locating part is arranged between the pressing head and the inner wall of the holding cavity, and the head end of the T-shaped handle is fixedly provided with a puncture tube sleeved at the periphery of the thread hooking needle tube; the tail end of the crocheting needle tube is fixedly connected with the pressing head, and a return spring which is abutted between the pressing head and the inner wall of the accommodating cavity is sleeved outside the crocheting needle tube. According to the puncture needle, the puncture tube is fixedly arranged at the head end of the T-shaped handle, the thread hooking needle tube is directly fixed with the pressing head, an operator only needs to press down the pressing head, the thread hooking needle head extends out of the puncture tube and hooks a suture, and after the pressing head is loosened, the thread hooking needle head returns to the puncture tube under the driving of the reset spring so as to take out the suture; the whole thread hooking device is simple in structure and convenient to operate.

Description

T-shaped thread hooking device

Technical Field

The utility model belongs to the field of medical equipment, concretely relates to line ware is colluded to T type.

Background

When a surgeon performs chest and laparoscopic surgery, tissues often cover the visual field of the surgery, in order to facilitate the operation, the surgeon needs to suspend and cover the tissues on the abdominal wall or the chest wall by using sutures before the surgery, the depth of the inner wall of a puncture hole after the surgery is deep, the simple hemostasis treatment cannot be performed, and the wound infection can be prevented by suturing. In order to avoid enlarging a minimally invasive opening and increasing iatrogenic injuries of a patient due to the preoperative treatment and the postoperative good-afterwork, a suture hooking device is required to hook and pull a suture before and after the operation.

Taking the chinese patent with the publication number of CN 106214196B as an example, the thread hooking device in the prior art generally includes a T-shaped handle, a movable lock catch is slidably mounted at the tail end of the handle, and a positioning member is disposed between the movable lock catch and the handle, the positioning member includes an elastic buckle disposed on the movable lock catch and a movable lock catch positioning hole disposed on the handle, and the elastic buckle is in clamping fit with the movable lock catch positioning hole; the handle is internally provided with a thread hooking needle assembly and a puncture tube assembly, wherein the thread hooking needle assembly comprises a thread hooking needle tube seat, a thread hooking needle tube is fixedly arranged on the thread hooking needle tube seat, and the head of the thread hooking needle tube is sleeved and pressed with a thread hooking needle head; a movable lock catch reset spring is arranged between the crocheting needle tube seat and the movable lock catch, a crocheting needle tube seat boss is arranged on the periphery of the crocheting needle tube seat, a crocheting needle assembly reset spring stop block is fixedly arranged in the handle, and a crocheting needle assembly reset spring with two ends respectively abutting against the crocheting needle tube seat boss and the crocheting needle assembly reset spring stop block is sleeved on the periphery of the crocheting needle tube seat; the puncture tube assembly comprises a puncture tube seat, the puncture tube seat is fixedly provided with a puncture tube, the puncture tube extends from the head end of the handle to the outer side of the handle, the head of the puncture tube is provided with an inclined opening tip, and the thread hooking needle tube and the thread hooking needle head are both arranged in the puncture tube in a penetrating manner; puncture tube seat and handle inner wall sliding fit, puncture tube seat periphery is equipped with puncture tube seat boss, and the handle internal fixation is equipped with puncture tube subassembly reset spring dog, and puncture tube seat periphery cover is equipped with both ends and leans on respectively puncture tube subassembly reset spring on puncture tube seat boss and puncture tube subassembly reset spring dog.

The using process of the wire hooking device comprises four steps: (1) placing the thread hooking device at an operation position, pressing the movable lock catch to enable the thread hooking needle head to expose out of the puncture tube, and hooking the suture by using the thread hooking needle head; (2) continuously pressing down the movable lock catch to enable the puncture tube to slowly sleeve the thread hooking needle head; (3) continuously pressing down the movable lock catch until the elastic buckle is accommodated in the positioning hole of the movable lock catch, so as to realize the locking of the movable lock catch and the handle, and at the moment, the thread hooking needle head completely hooks the suture and is completely sleeved in the puncture tube; (4) taking out the suture hooking device and taking the suture out of the operation position; (5) the movable lock catch is unlocked by the movable lock catch positioning hole, the movable lock catch returns to the initial state, and the next thread hooking can be carried out.

The thread hooking device has the following defects: (1) when the thread is hooked, an operator usually hooks the T-shaped handle by using a forefinger and a middle finger, presses the movable lock catch by using a thumb, and after the thread is hooked once, the hand-held mode of the thread hooking device needs to be changed to press the elastic buckle to release the locking of the movable lock catch by the positioning piece, or the locking of the movable lock catch by the positioning piece needs to be released by using the other hand, so that the whole thread hooking process is inconvenient to operate, and the thread hooking time is long; (2) the movable lock catch has a longer pressing stroke, after the movable lock catch is pressed to enable the wire hooking needle head to descend and expose the puncture tube, the movable lock catch is continuously pressed to enable the puncture tube to descend until the wire hooking needle head is completely sleeved, at the moment, the movable lock catch and the handle can be locked, the tension of three sections of reset springs is required to be overcome in the pressing process, and great examination is provided for the pressing pressure and muscle endurance of an operator; (3) the internal structure is complicated, and the cost of manufacture is high.

SUMMERY OF THE UTILITY MODEL

The invention aims to provide a T-shaped wire hooking device which is simple in structure, convenient to operate and short in pressing stroke of a pressing head.

In order to achieve the above purpose, the technical solution of the present application is as follows:

a T-shaped thread hooking device comprises a T-shaped handle with an accommodating cavity, a thread hooking needle tube is installed in the accommodating cavity, the head end of the thread hooking needle tube extends to the outside of the T-shaped handle and is provided with a thread hooking needle head, a pressing head is axially and slidably installed at one end, away from the thread hooking needle head, of the T-shaped handle, an axial limiting piece used for preventing the pressing head from falling off the accommodating cavity is arranged between the pressing head and the inner wall of the accommodating cavity, and a puncture tube sleeved on the periphery of the thread hooking needle tube is fixedly installed at one end, away from the pressing head, of the T-shaped handle; the tail end of the crocheting needle tube is fixedly connected with the pressing head, a return spring is sleeved on the periphery of the crocheting needle tube, and two ends of the return spring are respectively abutted against the pressing head and the inner wall of the accommodating cavity.

According to the puncture needle, the puncture tube is fixedly arranged at the head end of the T-shaped handle, the thread hooking needle tube is directly fixed with the pressing head, an operator only needs to press down the pressing head, the thread hooking needle head extends out of the puncture tube and hooks a suture, then the pressing head is loosened, and under the action of the reset spring, the thread hooking needle head takes the suture back into the puncture tube so as to take the suture out; the axial locating part is arranged between the pressing head and the inner wall of the containing cavity in the T-shaped handle, the automatic locating of the pressing head can be realized under the driving of the reset spring, the whole thread hooking device is simple in structure and convenient to operate, and the pressing head only needs to overcome the pressure of one section of reset spring in the whole thread hooking process to enable the thread hooking needle head to extend out of the puncture tube.

In order to prevent the suture from separating from the needle head during the retraction of the needle head, the return spring can be set to be shorter or have a larger stiffness coefficient so as to shorten the stroke of the pressing head and the needle head as much as possible and ensure that the needle head can rapidly and accurately complete the stretching-hooking-retracting action.

In order to ensure that the circumferential position of the thread hooking needle head is kept unchanged and is always in the visual field of an operator, in the T-shaped thread hooking device, a first circumferential limiting part for preventing the pressing head from circumferentially rotating is arranged between the pressing head and the T-shaped handle. The first circumferential limiting part limits circumferential rotation of the pressing head and also indirectly limits circumferential rotation of the line hooking needle tube and the line hooking needle head.

In the T-shaped wire hooking device, a limiting step is formed in the accommodating cavity at one end of the T-shaped handle close to the pressing head, a sealing cap abutting against the limiting step is fixedly mounted at the end of the T-shaped handle, a through hole for the pressing head to pass through and extend into the accommodating cavity is formed in the center of the sealing cap, and a second circumferential limiting part is arranged between the sealing cap and the T-shaped handle. Adopt the sealing cap to seal the holding chamber and make the assembly performance between press head and the T type handle better, the sealing cap can set up to connect on T type handle for detachable, preferably adopts and inlays the dress mode installation.

In this application, the second circumferential limiting member may include a first plane formed on the outer circumferential wall of the sealing cap, and a second plane formed on the inner circumferential wall of the accommodating cavity and attached to the first plane.

In foretell T type colludes line ware, first circumferential direction locating part include along at least a bead that the press head circumference set up, the through-hole inner wall seted up and be used for holding bead and with this bead axial sliding fit's recess.

The axial limiting part is convenient to arrange by adopting the sealing cap to seal the accommodating cavity. In the above T-shaped wire hooking device, the inner diameter of the through hole is smaller than the inner diameter of the accommodating cavity, the axial position limiting member includes a convex ring fixedly arranged on the periphery of the pressing head, the convex ring is arranged at one end of the pressing head penetrating through the through hole, and the outer diameter of the convex ring is larger than the passing inner diameter. The internal diameter of through-hole is less than the internal diameter in holding chamber, then in the holding intracavity, the sealing cap can form a spacing step, and the external diameter of the bulge loop of press head periphery is greater than the internal diameter that passes through, then the bulge loop can support and lean on the spacing step that the sealing cap formed when retreating to the terminal point along with the press head, realizes spacing to the axial of press head.

In the above T-shaped wire hooking device, one end of the return spring abuts against an end surface of the convex ring. The bulge loop sets up in the press head periphery, and the head end of press head can pass the bulge loop, supports reset spring on leaning on the bulge loop terminal surface, and then the press head is also wrapped up in wherein by reset spring, further ensures that reset spring can not warp.

Since the suture is usually thin, the suture at the operation site is often impregnated in a bloodstain, which causes difficulty in hooking the suture, resulting in difficulty for the operator to accurately hook the suture from the bloodstain, resulting in a long operation time. In order to solve the problem, in the T-shaped thread hooking device, a first counter bore for embedding the thread hooking needle tube is formed in the end face, facing one end of the thread hooking needle tube, of the pressing head, a flushing channel penetrating through the thread hooking needle tube is formed in the center of the thread hooking needle tube, a joint groove communicated with the flushing channel is formed in the pressing head, and the joint groove is used for being externally connected with a flushing water source. The flushing water source sends flushing fluid to the head end of the thread hooking needle tube through the connector groove and the flushing fluid channel, and the flushing water source can flush the operation position at the head end of the thread hooking needle tube, so that the suture is displayed in blood, and the thread hooking needle head can hook the suture accurately and quickly.

In the above T-shaped wire hooking device, the puncture tube is mounted on the T-shaped handle in the following manner: the T-shaped handle is provided with a second counter bore at one end facing the thread hooking needle head, the center of the second counter bore is provided with a central channel communicated with the containing cavity and used for the thread hooking needle tube to pass through, and the puncture tube is embedded in the second counter bore.

In foretell T type colludes line ware, T type handle including the axial extension portion that is equipped with the holding chamber to and set up two circumference extension portions in the axial extension portion periphery, circumference extension portion be in the axial extension portion and keep away from the one end of pressing the head. The arrangement position of the circumferential extension part is related to the pressing stroke of the pressing head, the pressing stroke of the pressing head is short in the application, and if the circumferential extension part is arranged close to the pressing head, the distance between the circumferential extension part and the pressing head is too short, so that force application and pressing of an operator are not facilitated.

In the T-shaped thread hooking device, one side of the circumferential extension part facing the thread hooking needle head is provided with an arc-shaped gripping surface for preventing slipping, and the tail end of the pressing head is provided with an arc-shaped pressing surface for preventing slipping. The arc gripping surface can be used for the operator to hook forefinger and the middle finger of circumference extension portion and form spacingly, and the arc press surface then can be used for pressing down the thumb of pressing head to the operator and form spacingly, ensures that the operator holds the line ware of colluding firmly.

Compared with the prior art, the beneficial effects of the utility model are that:

according to the puncture needle, the puncture tube is fixedly arranged at the head end of the T-shaped handle, the thread hooking needle tube is directly fixed with the pressing head, an operator only needs to press down the pressing head, the thread hooking needle head extends out of the puncture tube and hooks a suture, then the pressing head is loosened, and under the action of the reset spring, the thread hooking needle head takes the suture back into the puncture tube so as to take the suture out; the axial locating part is arranged between the pressing head and the inner wall of the containing cavity in the T-shaped handle, the automatic locating of the pressing head can be realized under the driving of the reset spring, the whole thread hooking device is simple in structure and convenient to operate, and the pressing head only needs to overcome the pressure of one section of reset spring in the whole thread hooking process to enable the thread hooking needle head to extend out of the puncture tube.

Drawings

Fig. 1 is a schematic structural view of the T-shaped wire hooking device of the present invention;

fig. 2 is a using state diagram of the T-shaped wire hooking device of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is an enlarged view of portion B of FIG. 2;

fig. 5 is a schematic structural view of the T-shaped thread hooking device of the present invention at another viewing angle;

FIG. 6 is a cross-sectional view taken at C-C of FIG. 5;

FIG. 7 is an enlarged view of portion D of FIG. 6;

FIG. 8 is an enlarged view of section E of FIG. 6;

fig. 9 is an enlarged view of portion F of fig. 6.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

Example 1

As shown in fig. 1, fig. 2 and fig. 5, as can be seen from fig. 4, the T-shaped thread hooking device of the present embodiment includes a T-shaped handle 1, a thread hooking needle tube 2 and a puncture tube 3 sleeved on the periphery of the thread hooking needle tube 2 are installed at the head end of the T-shaped handle 1, a thread hooking needle 21 is installed at the head end of the thread hooking needle tube 2, a pressing head 4 for driving the thread hooking needle tube 2 to extend and retract so that the thread hooking needle 21 extends out of the puncture tube 3 is slidably installed at the tail end of the T-shaped handle 1, and the tail end of the thread hooking needle tube 2 is fixedly connected with the pressing head 4.

As shown in fig. 6, in the present embodiment, the T-shaped handle 1 includes an axial extension portion 12 having a receiving cavity 11 therein, and two circumferential extensions 13 disposed on the outer periphery of the axial extension portion 12, the circumferential extensions 13 and the axial extension portion 12 are integrally disposed, and anti-slip protrusions 12a are uniformly disposed on the outer periphery of the axial extension portion 12. The circumferential extension 13 is located at one end of the axial extension 12 remote from the pressing head 4. The position of the circumferential extension part 13 is determined by the pressing stroke of the pressing head 4, and in the present application, the pressing stroke of the pressing head 4 is short, and if the circumferential extension part 13 is arranged close to the pressing head 4, the distance between the two parts is too short to facilitate the force application and pressing of an operator.

In addition, in order to facilitate an operator to grip the T-shaped handle 1, one side of the circumferential extension part 13 facing the thread hooking needle 21 is provided with an arc-shaped gripping surface 14 for preventing slipping, and the arc-shaped gripping surface 14 can limit the index finger and the middle finger of the operator for hooking the circumferential extension part 13; meanwhile, in order to facilitate the pressing of the pressing head 4 by the operator, the tail end of the pressing head 4 is provided with an arc pressing surface 41 for preventing slipping, and the arc pressing surface 41 can limit the thumb of the operator used for pressing the pressing head 4, so that the operator can firmly hold the thread hooking device.

As shown in fig. 9, and as can be seen from fig. 1 and 6, in the present embodiment, the sliding installation manner of the pressing head 4 on the T-shaped handle 1 is as follows: at the tail end of T type handle 1 (be close to the one end of press head 4 promptly), the holding intracavity 11 is formed with spacing step 15, the tip fixed mounting of T type handle 1 supports the closing cap 5 that leans on this spacing step 15, the through-hole 51 that supplies the press head 4 to pass and extend to the holding intracavity 11 is seted up at this closing cap 5 central authorities, be equipped with between press head 4 and the closing cap 5 and be used for preventing to press head 4 to take place circumferential direction's first circumferential direction locating part, be equipped with between this closing cap 5 and T type handle 1 and prevent that closing cap 5 from taking place circumferential direction's second circumferential direction locating part. Adopt the closing cap 5 to seal holding chamber 11 and make the assembly performance between press head 4 and the T type handle 1 better, closing cap 5 can set up to connect on T type handle 1 for detachable, preferably adopts the mode of inlaying the dress installation.

The first circumferential limiting member includes at least one rib 42 circumferentially disposed along the pressing head 4, a groove 52 for accommodating the rib 42 and axially sliding-fitting with the rib 42 is disposed on an inner wall of the through hole 51, and the groove 52 and the rib 42 are disposed in a one-to-one correspondence. The second circumferential limiting member includes a first plane 53 formed on the outer circumferential wall of the cap 5, and a second plane 16 formed on the inner circumferential wall of the accommodating cavity 11 and attached to the first plane 53. The inner peripheral wall of the accommodating cavity 11 and the outer periphery of the sealing cap 5 are originally circumferential curved surfaces, and after the first plane 53 and the second plane 16 are formed by splitting, the sealing cap 5 is limited to rotate circumferentially by the corners between the planes and the circumferential curved surfaces.

Because the pressing head 4 axially slides along the accommodating cavity 11 to realize the function thereof, in order to avoid the pressing head 4 from being separated from the accommodating cavity 11, an axial limiting piece is also arranged between the pressing head 4 and the inner wall of the accommodating cavity 11. As can be seen from fig. 9, the inner diameter of the through hole 51 in the sealing cap 5 is smaller than the inner diameter of the accommodating cavity 11, and the axial limiting member comprises a convex ring 43 fixedly arranged on the outer periphery of the pressing head 4, the convex ring 43 is arranged at one end of the pressing head 4 penetrating through the through hole, and the outer diameter of the convex ring 43 is larger than the inner diameter of the through hole. The inner diameter of the through hole 51 is smaller than that of the accommodating cavity 11, the sealing cap 5 can form a limiting step in the accommodating cavity 11, the outer diameter of the convex ring 43 on the periphery of the pressing head 4 is larger than the inner diameter of the through hole, and the convex ring 43 can abut against the limiting step formed by the sealing cap 5 when retreating to the end point along with the pressing head 4, so that the axial limiting of the pressing head 4 is realized.

As shown in fig. 9 and shown in fig. 6, a first counter bore 45 is formed in an end surface of the pressing head 4 facing one end of the needle tube 2, the tail end of the needle tube 2 is embedded in the first counter bore 45, and a first guide arc surface facilitating embedding of the needle tube 2 is formed at an opening of the first counter bore 45. When an operator presses the pressing head 4, the thread hooking needle tube 2 can slide along the axial direction of the accommodating cavity 11 along with the pressing head 4, meanwhile, in the accommodating cavity 11, the outer circumference of the thread hooking needle tube 2 is sleeved with the return spring 6, and two ends of the return spring 6 are respectively abutted against the end face of the convex ring 43 and the inner wall of the accommodating cavity 11. The convex ring 43 is arranged on the periphery of the pressing head 4, and the head end of the pressing head 4 can pass through the convex ring 43, so that the return spring 6 is abutted against the end surface of the convex ring 43, and then the pressing head 4 is also wrapped in the return spring 6, thereby further ensuring that the return spring 6 cannot be distorted and deformed.

In order to prevent the suture from separating from the needle 21 during the retraction of the needle 21, the return spring 6 may be set to be shorter or have a larger stiffness coefficient so as to shorten the stroke of the pressing head 4 and the needle 21 as much as possible and ensure that the needle 21 can perform the "stretching-hooking-retracting" operation quickly and accurately.

As can be seen from fig. 3, 4 and 7, the center of the crochet needle tube 2 is opened with a flushing channel 22 which runs through the crochet needle tube 2, and the head end of the crochet needle tube 2 is provided with a flushing hole 23 which is communicated with the flushing channel 22; the pressing head 4 is provided with a joint groove 44 communicated with the flushing channel 22, and the joint groove 44 is used for externally connecting a flushing water source. The flushing water source sends flushing fluid to the head end of the needle tube 2 for line hooking through the joint groove 44 and the flushing fluid channel 22, and can flush the operation position at the head end of the needle tube 2 for line hooking, so that the suture impregnated in blood is shown out from the blood, and the needle 21 for line hooking can hook the suture accurately and quickly.

As shown in fig. 8 and seen in fig. 6, a second counter bore 17 is provided at an end of the T-shaped handle 1 facing the needle 21 for hooking the puncture needle, the puncture tube 3 is embedded in the second counter bore 17, and a second guiding arc 18 facilitating the insertion of the puncture tube 3 is provided at an opening of the second counter bore 17; the center of the second counter bore 17 is provided with a central channel 19 communicated with the accommodating cavity 11, the thread-hooking needle tube 2 extends out from the accommodating cavity 11 and then passes through the central channel 19 to enter the puncture tube 3, the head end of the puncture tube 3 is an oblique opening section 31, and the head end of the thread-hooking needle tube 2 is also an oblique opening section with a consistent angle.

The operating principle of the T-shaped wire hooking device of the embodiment is as follows:

placing the thread hooking device at an operation position, firstly opening a flushing water source, flushing the thread hooking position by utilizing flushing fluid, and closing the flushing water source after the suture appears; then the pressing head 4 is pressed down to lead the thread hooking needle head 21 to extend out of the puncture tube 3 and hook the suture; then the pressing head 4 is released, and the thread hooking needle 21 carries the thread back into the puncture tube 3 under the action of the return spring 6, so that the thread is taken out.

Claims (10)

1. A T-shaped thread hooking device comprises a T-shaped handle (1) internally provided with a containing cavity (11), wherein a thread hooking needle tube (2) is installed in the containing cavity (11), the head end of the thread hooking needle tube (2) extends to the outside of the T-shaped handle (1) and is provided with a thread hooking needle head (21), and the T-shaped handle is characterized in that one end of the T-shaped handle (1), which is far away from the thread hooking needle head (21), is axially and slidably provided with a pressing head (4), an axial limiting part for preventing the pressing head (4) from being separated from the containing cavity (11) is arranged between the pressing head (4) and the inner wall of the containing cavity (11), and one end of the T-shaped handle (1), which is far away from the pressing head (4), is fixedly provided with a puncture tube (3) sleeved on the periphery; the tail end of the crocheting needle tube (2) is fixedly connected with the pressing head (4), a return spring (6) is sleeved on the periphery of the crocheting needle tube (2), and two ends of the return spring (6) are respectively abutted against the inner walls of the pressing head (4) and the accommodating cavity (11).

2. The T-shaped wire hooking device according to claim 1, wherein a first circumferential limiting member for preventing the pressing head (4) from circumferentially rotating is arranged between the pressing head (4) and the T-shaped handle (1).

3. The T-shaped wire hooking device according to claim 2, wherein a limiting step (15) is formed in the accommodating cavity (11) at one end of the T-shaped handle (1) close to the pressing head (4), a sealing cap (5) abutting against the limiting step (15) is fixedly installed at the end of the T-shaped handle (1), a through hole (51) for the pressing head (4) to pass through and extend into the accommodating cavity (11) is formed in the center of the sealing cap (5), and a second circumferential limiting part is arranged between the sealing cap (5) and the T-shaped handle (1).

4. The T-shaped wire hooking device according to claim 3, wherein the first circumferential limiting member comprises at least one rib (42) circumferentially arranged along the pressing head (4), and a groove (52) for accommodating the rib (42) and axially sliding-fitting with the rib (42) is formed in the inner wall of the through hole (51).

5. The T-shaped wire hooking device according to claim 3, wherein the inner diameter of the through hole (51) is smaller than the inner diameter of the accommodating cavity (11), the axial limiting member comprises a convex ring (43) fixedly arranged on the outer periphery of the pressing head (4), the convex ring (43) is arranged at one end of the pressing head (4) penetrating through the through hole (51), and the outer diameter of the convex ring (43) is larger than the inner diameter of the through hole (51).

6. The T-shaped wire hooking device of claim 5, wherein one end of the return spring (6) abuts against the end surface of the convex ring (43).

7. The T-shaped thread hooking device according to any one of claims 1 to 6, wherein a first counter bore (45) for embedding the thread hooking needle tube (2) is formed in the end surface of the pressing head (4) facing one end of the thread hooking needle tube (2), a flushing channel (22) penetrating the thread hooking needle tube (2) is formed in the center of the thread hooking needle tube (2), a joint groove (44) communicated with the flushing channel (22) is formed in the pressing head (4), and the joint groove (44) is used for externally connecting a flushing water source.

8. The T-shaped thread hooking device according to claim 7, characterized in that a second counter bore (17) is arranged at one end of the T-shaped handle (1) facing the thread hooking needle (21), a central channel (19) communicated with the accommodating cavity (11) and used for the thread hooking needle tube (2) to pass through is arranged at the center of the second counter bore (17), and the puncture tube (3) is embedded in the second counter bore (17).

9. A T-shaped thread hooking device as claimed in any one of claims 1 to 6 and 8, wherein the T-shaped handle (1) comprises an axially extending part (12) provided with a containing cavity (11), and two circumferential extensions (13) arranged on the periphery of the axially extending part (12), and the circumferential extensions (13) are arranged at one end of the axially extending part (12) far away from the pressing head (4).

10. The T-shaped thread hooking device of claim 9, wherein the side of the circumferential extension (13) facing the thread hooking needle (21) is provided with an arc-shaped gripping surface (14) for preventing slippage, and the tail end of the pressing head (4) is provided with an arc-shaped pressing surface (41) for preventing slippage.

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