Continuous launching device for conveying ligation clips

Abstract

The utility model relates to the technical field of ligation clip conveying, and discloses a continuous firing device for conveying ligation clips, which comprises a conveying magazine, the bottom surface of the conveying magazine is fixedly connected with a shell in a penetrating manner, and a conveying device is arranged in the conveying magazine. According to the continuous shooting device for conveying the ligation clips, by arranging a pushing block, a connecting rod, a first spring, a lower pressing plate, a pressing block, a rotating shaft, a friction roller, a ratchet wheel, an elastic piece and a second pawl, the pressing block is pressed rightwards, so that the second pawl pushes the ratchet wheel to rotate, and the extrusion force of the friction roller and the connecting rod is improved through the elastic force of the first spring; when the pressing block is reset to the left side, the elastic piece is shortened, the second pawl cannot push the ratchet wheel to rotate, and the connecting rod is prevented from moving rightwards; by arranging a fixing rod and a second spring, positioning is conducted through the fixing rod and the pressing block, and the pressing block is reset towards the left side through the elastic force of the second spring.

Description

Technical Field

[0001] The utility model relates to the technical field of ligature clip conveying, in particular to a continuous firing device for conveying ligature clips. Background Technique

[0002] In laparoscopic surgery, doctors often use hemostatic ligature clips to ligate tubular tissues in the human body to prevent the leakage of liquid in the tubular tissues, which affects the doctor's operation and even threatens the safety of the patient.

[0003] The Chinese patent discloses a continuous firing clip applicator and a continuous firing clip applying device, with the publication number CN107981909B, which includes a cylindrical clip cavity and a magazine disposed in the clip cavity for loading ligature clips. One end of the clip cavity is provided with a clip jaw for assisting in discharging the ligature clip, the magazine abuts against the clip jaw, a push rod is inserted into the end of the clip cavity far from the clip jaw, and the end of the push rod located in the clip cavity abuts against the nearest ligature clip. A pushing part for continuously pushing the push rod in the direction of the clip jaw is also provided at the end of the clip cavity far from the clip jaw. This continuous firing clip applicator can achieve safe, effective and fast continuous discharging of ligature clips. The continuous firing clip applying device can achieve continuous release of double-layer structure ligature clips.

[0004] However, it still has the following disadvantages: The device presses the movable handle to make the pushing block push the push rod to move to the left. However, when the movable handle resets, the pushing block will also drive the push rod to move a short distance to the right, increasing the frequency and number of times the doctor presses the movable handle and affecting the doctor's work efficiency. For this reason, we propose a continuous firing device for conveying ligature clips to solve this problem. Content of the Utility Model

[0005] The purpose of the utility model is to provide a continuous firing device for conveying ligature clips to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A continuous firing device for conveying ligature clips, including a conveying magazine, the bottom surface of the conveying magazine is fixedly and through-connected with a housing, a conveying device is arranged inside the conveying magazine, and the conveying device includes a pushing part;

[0007] The pushing part includes a pushing block and a lower pressing plate. A sliding groove is formed in the inner wall of the conveying magazine. The pushing block is arranged inside the conveying magazine. The outer surface of the pushing block extends into the sliding groove and is slidably connected with the inner wall of the sliding groove. The outer surface of the top end of the lower pressing plate is rotatably connected with the inner wall of the conveying magazine through a pin;

[0008] A power part is arranged inside the housing;

[0009] The power unit includes a fixed rod, a pressing block, a rotating shaft, a friction roller and a ratchet wheel. The right end face of the fixed rod is fixedly connected to the inner wall of the housing. The right end face of the pressing block is open. The outer surface of the left end of the fixed rod extends into the pressing block and is slidably connected to the inner wall of the pressing block. The front and rear end faces of the rotating shaft are rotatably connected to the inner wall of the housing through bearing seats. The friction roller and the ratchet wheel are both fixedly sleeved on the outer surface of the rotating shaft.

[0010] Further improvement lies in that the pushing part further includes a connecting rod and a first spring. The left end face of the connecting rod is fixedly connected to the right end face of the pushing block. The outer surface of the right end of the connecting rod slidably penetrates through the inner wall of the conveying magazine and extends to the right side of the conveying magazine. By providing the connecting rod and the pushing block, the connecting rod is used to push the pushing block and the ligating clip to move to the left.

[0011] Further improvement lies in that the top end of the first spring is fixedly connected to the inner wall of the conveying magazine, the bottom end of the first spring is fixedly connected to the top surface of the lower pressing plate, and the bottom surface of the lower pressing plate is in pressing contact with the connecting rod. By providing the fixed rod and the first spring, the elastic force of the first spring is used to increase the frictional force between the connecting rod and the friction roller.

[0012] Further improvement lies in that a loading hole is provided on the top surface of the conveying magazine, a disassembly hole is provided on the front surface of the conveying magazine, and the outer surfaces of the pushing block and the connecting rod are both adapted to the inner wall of the disassembly hole. The disassembly hole is used to facilitate the installation and disassembly of the connecting rod and the pushing block.

[0013] Further improvement lies in that the power unit further includes a second spring, a first ratchet pawl, a third spring, an elastic member and a second ratchet pawl. The outer surface of the second ratchet pawl is engaged with the outer surface of the ratchet wheel. The bottom surface of the second ratchet pawl is fixedly connected to the top surface of the elastic member. The bottom surface of the elastic member is fixedly connected to the top surface of the pressing block. By providing the second ratchet pawl and the elastic member, when the second ratchet pawl moves to the right, it pushes the ratchet wheel to rotate. When the second ratchet pawl resets to the left, the elastic member shortens.

[0014] Further improvement lies in that the left end face of the first ratchet pawl is engaged with the outer surface of the ratchet wheel. The right end face of the first ratchet pawl is fixedly connected to the left end of the third spring. The right end of the third spring is fixedly connected to the inner wall of the housing. By providing the first ratchet pawl and the third spring, it is convenient to position the ratchet wheel.

[0015] Further improvement lies in that the right end of the second spring is fixedly connected to the left end face of the fixed rod, and the left end of the second spring is fixedly connected to the inner wall of the pressing block. By providing the second spring and the pressing block, it is convenient for the pressing block to reset to the left.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: for the continuous firing device for conveying ligating clips, by setting a pushing block, a connecting rod, a first spring, a lower pressing plate, a pressing block, a rotating shaft, a friction roller, a ratchet wheel, an elastic member, and a second pawl, when the pressing block is pressed to the right, the second pawl is made to push the ratchet wheel to rotate. By utilizing the elastic force of the first spring, the extrusion force between the friction roller and the connecting rod is increased, so that the friction roller drives the connecting rod to move to the left. When the pressing block resets to the left, the elastic member shortens, and the second pawl will not push the ratchet wheel to rotate, thus avoiding the connecting rod from moving to the right; by setting a fixing rod and a second spring, positioning is carried out by using the fixing rod and the pressing block, and by utilizing the elastic force of the second spring, the pressing block is made to reset to the left; by setting a first pawl and a third spring, by utilizing the elastic force of the third spring, when the pressing block resets to the left, the ratchet wheel is prevented from rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a cross-sectional view of the overall structure of the present utility model;

[0019] Figure 3 is Figure 2 an enlarged view of the structure at A in

[0020] Figure 4 is a cross-sectional view of the three-dimensional structure of the conveying device of the present utility model;

[0021] Figure 5 is an exploded view of the partial structure of the pushing part of the present utility model.

[0022] In the figure: 1 conveying magazine, 2 housing, 3 conveying device, 31 pushing part, 32 power part, 311 pushing block, 312 connecting rod, 313 first spring, 314 lower pressing plate, 321 fixing rod, 322 second spring, 323 pressing block, 324 rotating shaft, 325 friction roller, 326 ratchet wheel, 327 first pawl, 328 third spring, 329 elastic member, 320 second pawl. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 - 5, the present utility model provides a technical solution: a continuous firing device for conveying ligation clips, including a conveying magazine 1, a housing 2 is fixedly and penetratingly connected to the bottom surface of the conveying magazine 1, a conveying device 3 is arranged inside the conveying magazine 1, and the conveying device 3 includes a pushing part 31;

[0025] The pushing part 31 includes a pushing block 311 and a lower pressing plate 314. A sliding groove is formed in the inner wall of the conveying magazine 1. The pushing block 311 is arranged inside the conveying magazine 1. The outer surface of the pushing block 311 extends into the sliding groove and is slidably connected to the inner wall of the sliding groove. The outer surface of the top end of the lower pressing plate 314 is rotatably connected to the inner wall of the conveying magazine 1 through a pin. The pushing part 31 further includes a connecting rod 312 and a first spring 313;

[0026] A loading hole is formed in the top surface of the conveying magazine, and a disassembly hole is formed in the front surface of the conveying magazine 1. The outer surfaces of the pushing block 311 and the connecting rod 312 are both adapted to the inner wall of the disassembly hole. The left end surface of the connecting rod 312 is fixedly connected to the right end surface of the pushing block 311. The outer surface of the right end of the connecting rod 312 slidably penetrates the inner wall of the conveying magazine 1 and extends to the right side of the conveying magazine 1;

[0027] The top end of the first spring 313 is fixedly connected to the inner wall of the conveying magazine 1, the bottom end of the first spring 313 is fixedly connected to the top surface of the lower pressing plate 314, and the bottom surface of the lower pressing plate 314 is in pressing contact with the connecting rod 312;

[0028] A power part 32 is arranged inside the housing 2;

[0029] The power part 32 includes a fixed rod 321, a pressing block 323, a rotating shaft 324, a friction roller 325 and a ratchet 326. The right end surface of the fixed rod 321 is fixedly connected to the inner wall of the housing 2. The right end surface of the pressing block 323 is open. The outer surface of the left end of the fixed rod 321 extends into the pressing block 323 and is slidably connected to the inner wall of the pressing block 323. The front and rear end surfaces of the rotating shaft 324 are rotatably connected to the inner wall of the housing 2 through bearing seats. The friction roller 325 and the ratchet 326 are both fixedly sleeved on the outer surface of the rotating shaft 324. The power part 32 further includes a second spring 322, a first pawl 327, a third spring 328, an elastic member 329 and a second pawl 320;

[0030] The outer surface of the second pawl 320 is engaged with the outer surface of the ratchet wheel 326. The bottom surface of the second pawl 320 is fixedly connected to the top surface of the elastic member 329. The bottom surface of the elastic member 329 is fixedly connected to the top surface of the pressing block 323. By providing the pushing block 311, the connecting rod 312, the first spring 313, the lower pressing plate 314, the pressing block 323, the rotating shaft 324, the friction roller 325, the ratchet wheel 326, the elastic member 329 and the second pawl 320, when the pressing block 323 is pressed to the right, the second pawl 320 pushes the ratchet wheel 326 to rotate. By using the elastic force of the first spring 313, the extrusion force between the friction roller 325 and the connecting rod 312 is increased, so that the friction roller 325 drives the connecting rod 312 to move to the left. When the pressing block 323 returns to the left, the elastic member 329 shortens, and the second pawl 320 will not push the ratchet wheel 326 to rotate, thus preventing the connecting rod 312 from moving to the right;

[0031] The right end of the second spring 322 is fixedly connected to the left end surface of the fixed rod 321. The left end of the second spring 322 is fixedly connected to the inner wall of the pressing block 323. By providing the fixed rod 321 and the second spring 322, the fixed rod 321 is used to position the pressing block 323, and by using the elastic force of the second spring 322, the pressing block 323 is returned to the left;

[0032] The left end surface of the first pawl 327 is engaged with the outer surface of the ratchet wheel 326. The right end surface of the first pawl 327 is fixedly connected to the left end of the third spring 328. The right end of the third spring 328 is fixedly connected to the inner wall of the housing 2. By providing the first pawl 327 and the third spring 328, by using the elastic force of the third spring 328, when the pressing block 323 returns to the left, the ratchet wheel 326 is prevented from rotating.

[0033] During use, when the pressing block 323 is pressed to the right, the pressing block 323 drives the second pawl 320 to move to the right. The second pawl 320 pushes the ratchet wheel 326 to rotate. The ratchet wheel 326 drives the rotating shaft 324 and the friction roller 325 to rotate. The friction roller 325 pushes the connecting rod 312 to move to the left. The connecting rod 312 drives the pushing block 311 to move to the left. The pushing block 311 drives the ligating clip to move to the left. When the pressing block 323 is released, the second spring 322 elongates, causing the pressing block 323 and the second pawl 320 to return to the left. By repeatedly pressing the pressing block 323, the connecting rod 321 and the pushing block 311 can be continuously moved to the left.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous firing device for delivering ligating clips, comprising a delivery magazine (1), characterized in that: The bottom surface of the conveying magazine (1) is fixedly and through-connected with a housing (2). A conveying device (3) is arranged inside the conveying magazine (1), and the conveying device (3) includes a pushing part (31). The pushing part (31) includes a pushing block (311) and a lower pressing plate (314). A sliding groove is formed in the inner wall of the conveying magazine (1). The pushing block (311) is arranged inside the conveying magazine (1). The outer surface of the pushing block (311) extends into the sliding groove and is slidably connected with the inner wall of the sliding groove. The outer surface of the top end of the lower pressing plate (314) is rotatably connected with the inner wall of the conveying magazine (1) through a pin. A power part (32) is arranged inside the housing (2). The power part (32) includes a fixing rod (321), a pressing block (323), a rotating shaft (324), a friction roller (325) and a ratchet wheel (326). The right end face of the fixing rod (321) is fixedly connected with the inner wall of the housing (2). The right end face of the pressing block (323) is open. The outer surface of the left end of the fixing rod (321) extends into the pressing block (323) and is slidably connected with the inner wall of the pressing block (323). The front and rear end faces of the rotating shaft (324) are rotatably connected with the inner wall of the housing (2) through bearing seats. The friction roller (325) and the ratchet wheel (326) are both fixedly sleeved on the outer surface of the rotating shaft (324).

2. The continuous firing device for delivering ligating clips according to claim 1, wherein: The pushing part (31) further includes a connecting rod (312) and a first spring (313). The left end face of the connecting rod (312) is fixedly connected with the right end face of the pushing block (311). The outer surface of the right end of the connecting rod (312) slidably penetrates through the inner wall of the conveying magazine (1) and extends to the right side of the conveying magazine (1).

3. The continuous firing device for delivering ligating clips according to claim 2, wherein: The top end of the first spring (313) is fixedly connected with the inner wall of the conveying magazine (1). The bottom end of the first spring (313) is fixedly connected with the top surface of the lower pressing plate (314). The bottom surface of the lower pressing plate (314) is in pressing contact with the connecting rod (312).

4. A continuous firing device for delivering ligating clips according to claim 2, wherein: A loading hole is formed in the top surface of the conveying magazine. A disassembly hole is formed in the front surface of the conveying magazine (1). The outer surfaces of the pushing block (311) and the connecting rod (312) are both adapted to the inner wall of the disassembly hole.

5. A sequential firing device for delivering ligating clips according to claim 1, characterized in that: The power part (32) further includes a second spring (322), a first ratchet pawl (327), a third spring (328), an elastic member (329) and a second ratchet pawl (320). The outer surface of the second ratchet pawl (320) is clamped with the outer surface of the ratchet wheel (326). The bottom surface of the second ratchet pawl (320) is fixedly connected with the top surface of the elastic member (329). The bottom surface of the elastic member (329) is fixedly connected with the top surface of the pressing block (323).

6. A continuous firing device for delivering ligating clips according to claim 5, characterized in that: The left end face of the first ratchet pawl (327) is clamped with the outer surface of the ratchet wheel (326). The right end face of the first ratchet pawl (327) is fixedly connected with the left end of the third spring (328). The right end of the third spring (328) is fixedly connected with the inner wall of the housing (2).

7. A sequential firing device for delivering ligating clips according to claim 5, characterized in that: The right end of the second spring (322) is fixedly connected with the left end face of the fixing rod (321). The left end of the second spring (322) is fixedly connected with the inner wall of the pressing block (323).

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