Laparoscopic clamp with detachable clamp head

Abstract

The present invention belongs to the technical field of minimally invasive medical devices, and relates to a laparoscopic clamp with a detachable clamp head, comprising a clamp body, the clamp body is connected to a hinged left and right holding handle, a detachable clamp head is installed at the front end of the clamp head seat, a longitudinal through hole is provided at the rear of the clamp head, a spring is installed in the through hole, the top of the spring is fixed in the through hole, the bottom of the spring is a steel ball, the bottom end of the through hole is reduced in diameter so that the steel ball is exposed to the inferior arc surface, and the front of the clamp head seat is a groove with an opening facing forward, and the rear of the clamp head is located in the groove by compressing the steel ball and fixed by a retaining ring provided at the groove mouth. The instrument can be offset and rotated at any angle by a turning wheel and a rotating wheel; and can be rotated at any angle in the clamping space during laparoscopic surgery. The clamp head is detachable, and the clamp head of corresponding specifications can be installed according to actual needs, which provides convenient and stable clamping force for laparoscopic orthopedic fixation, shortens the operation time, reduces the difficulty of the operation, and makes fracture treatment more accurate and effective.

Description

Technical Field

[0001] The invention belongs to the technical field of minimally invasive medical devices and relates to surgical forceps, in particular to a clamping forceps with a detachable forceps head which can rotate at any angle in a space after clamping in laparoscopic surgery. Background Art

[0002] Ordinary chest and abdominal surgeries require large incisions to fully expose the surgical field of view, and special treatment of the tissues in the incision is required. In laparoscopic surgery, it is usually necessary to use ordinary clamps to clamp the device outside the body, and then send the instrument into the body through the channel. However, because the clamp body is too short or the clamp head cannot rotate at any angle in space, the instrument cannot be accurately aligned with the affected area. In addition, for memory alloy orthopedic products, the deformation of the shaped product may recover during the process of clamping outside the body, sending it into the channel, and fixing it. It needs to be opened and fixed for many times, which increases the difficulty of operation, cannot effectively fix the product in the best position, prolongs the operation time, and increases the labor intensity of the operator. Summary of the invention

[0003] In order to overcome the defect that common clamps in existing laparoscopic orthopedic surgery cannot be accurately fixed, the present invention provides a laparoscopic clamp with reasonable structure, accurate positioning, and the ability to replace clamp heads of different specifications according to needs.

[0004] In order to solve the above-mentioned problems, the present invention adopts the following technical scheme: a laparoscope clamp with a detachable clamp head, comprising a clamp body, which is connected to left and right hinged holding handles, and the clamp body comprises a clamp head seat and a clamp tube; a detachable clamp head is installed at the front end of the clamp head seat, a longitudinal through hole is provided at the rear of the clamp head, a spring is installed in the through hole, the top end of the spring is fixed in the through hole, the bottom end of the spring is a steel ball, the diameter of the bottom end of the through hole is reduced so that the steel ball exposes the inferior arc surface, and a groove with an opening facing forward is provided at the front of the clamp head seat, and the rear part of the clamp head is located in the groove by compressing the steel ball and fixed by a retaining ring provided at the mouth of the groove.

[0005] Furthermore, the rear end of the clamp head seat is connected to the front part of the sliding seat, the rear part of the sliding seat is a long strip extending into the fixed seat and connected by a pin, the front part of the fixed seat is divided into upper and lower halves, the long strip of the sliding seat is located in the gap between the two halves, the rear part of the fixed seat is a threaded tube that matches and connects to the clamp tube, an inner pull rod longer than the clamp tube is installed in the clamp tube, the front end of the inner pull rod is connected to the rear part of the sliding seat, and the inner pull rod is controlled to move forward and backward for guidance by a turning wheel provided at the rear end of the clamp tube, so that the clamp head sliding seat is deflected from between the upper and lower halves of the fixed seat to the side of the clamp body.

[0006] Furthermore, the front part of the sliding seat is a cylindrical head, which transitions into a long strip. A sliding hole is opened on the long strip, and a pull rod pin matching its width is installed in the sliding hole as a guide. The pull rod pin is vertically installed at the starting end of the inner pull rod. By pulling the inner pull rod back and forth, the pull rod pin on it guides the sliding seat so that the long strip of the sliding seat extends from the gap between the upper and lower petals of the fixed seat and deviates to the side.

[0007] Furthermore, a connecting sleeve is fixed to the rear end of the pliers tube, and a rotating wheel seat is arranged behind the connecting sleeve. The seat body of the rotating wheel seat is fixed to the top ends of the left and right hinged handles, and a rotating wheel for controlling the axial rotation of the entire pliers body by 360 degrees is installed on the rotating wheel of the rotating wheel seat.

[0008] Furthermore, a sliding rod is fixed to the rear end of the inner pull rod, the front part of the connecting sleeve is fixed to the rear end of the clamp tube through a plastic plug, the rear part of the connecting sleeve is connected to a connecting sleeve, a turning wheel is clamped between the plastic plug and the connecting sleeve, the turning wheel is provided with an internal thread which is threadedly connected to the sliding rod in the connecting sleeve, and the sliding rod is controlled by rotating the turning wheel to drive the inner pull rod to move forward and backward.

[0009] The tail of the connecting sleeve is fixedly connected to the rotating wheel of the rotating wheel seat through a connecting pipe, and the rotating wheel is fixed on the rotating wheel.

[0010] Furthermore, it also includes a connecting piece formed integrally of a sphere and a ball handle, the rear end of the pliers head seat is provided with a spherical groove matching the connecting piece sphere, the sphere is located in the spherical groove and is fixed at the rear end of the spherical groove by a matching spherical pressing cap, and a groove body for fixing the connecting piece ball handle is opened in the middle of the front column of the sliding seat, and the rear end of the pliers head seat is connected to the front end of the sliding seat through the connecting piece.

[0011] Preferably, the inner diameter of the retaining ring at the groove opening at the front of the pliers head seat is equivalent to the outer diameter of the rear of the pliers head.

[0012] The beneficial effect of the present invention is that the clamp head of the present invention is detachable, and the clamp head of corresponding specifications can be quickly installed according to actual needs to meet various needs. In the human body under laparoscopy, after the product is stretched and shaped by special tools, the clamp is inserted from the channel and clamped at the designated part of the product, and then quickly placed on the affected bone by adjusting the rotation of the clamp head to reposition it, overcoming the shortcomings of the lag of the treatment operation after in vitro shaping or the inability to rotate the clamp head, such as inaccurate positioning and obstruction of the surgical field, and providing convenient and stable clamping force for laparoscopic orthopedic fixation, shortening the operation time, reducing the difficulty of the operation, and making fracture treatment more accurate and effective.

[0013] The present invention includes four adjustment mechanisms. During surgery, the detachable clamp head can rotate 360° in the front groove of the clamp head seat 3 in vivo to adjust the best implantation contact surface; the ball of the connecting piece between the clamp head seat 3 and the sliding seat 6 in vivo can rotate in the spherical groove of the clamp head seat 3 to find the best point of force during product implantation. In vitro, the turning wheel controls the sliding rod 13 to drive the inner pull rod 8 to move forward and backward, and the inner pull rod 8 guides the sliding seat 6 so that the long strip of the sliding seat 6 extends from the gap between the upper and lower lobes of the fixed seat 7 to the side, so that the clamp head is deflected to one side, so that there is a certain angle between the clamp head and the clamp body, expanding the operator's field of vision and facilitating effective observation of the surgical conditions; by controlling the rotation of the rotating wheel, the entire clamp body is driven to rotate 360° in the cavity, so that the operator can select the best implantation point to install the product. The turning wheel and the rotating wheel device can realize the displacement and rotation of the instrument at any angle, so as to achieve the rotation of any angle in the clamping space during laparoscopic surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 . Schematic diagram of the structure of the detachable clamp head laparoscopic clamp applicator;

[0015] Figure 2 . Figure 1 Schematic diagram of the enlarged structure of the middle clamp head;

[0016] Figure 3 . Figure 1 A schematic diagram of the enlarged structure of the rear part of the middle clamp body;

[0017] Figure 4 . Schematic diagram of the longitudinal cross-section structure of the fixed seat;

[0018] Figure 5 . Figure 1 A schematic diagram of the transverse cross-sectional structure of the middle sliding seat;

[0019] Figure 6 . Schematic diagram of the longitudinal cross-section structure of the external connecting sleeve of the clamp.

[0020] Figure 1 Middle: 1-clamp head; 2-marble; 3-clamp head seat; 4-ball; 5-ball pressure cap; 6-

[0021] Sliding seat; 61-cylindrical head, 62-long strip; 63-sliding hole; 64-pull rod pin; 7-fixed seat; 71-upper petal; 72-lower petal; 73-threaded tube; 74-gap; 8-inner pull rod; 9-clamp tube; 10-plastic plug; 11-turning wheel; 12-external sleeve; 121-slot; 13-sliding rod; 131-card; 14-clamp; 15-connecting sleeve; 16-connecting tube; 17-rotor seat; 18-fixing nut; 19-rotor; 20-left handle; 21-right handle; 22-spring leaf. DETAILED DESCRIPTION

[0022] The present invention will be further explained and illustrated below in conjunction with the specific drawings;

[0023] A laparoscope clamp with a detachable clamp head comprises a clamp body, which is composed of a clamp head seat 3 and a clamp tube 9; the front end of the clamp head seat 3 is equipped with a detachable clamp head, and the rear end of the clamp head seat 3 is composed of a sliding seat 6, a fixed seat 7, a clamp tube 9, and hinged left and right gripping handles. The front part of the sliding seat 6 is a cylindrical head, and then the cylindrical head 61 transitions into a horizontal long strip 62, and the horizontal long strip is provided with an oblique elliptical sliding hole 63, and a pull rod pin 64 matching its width is installed in the sliding hole 63 as a guide, and the pull rod pin is vertically installed at the beginning of the inner pull rod. The front part of the fixed seat 7 is divided into upper and lower lobes, each lobe has an arc-shaped longitudinal section, and there is a gap 74 between the two lobes, and the rear part of the fixed seat 7 is a threaded tube 73 matched with the clamp tube 9. The front part of the sliding seat 6 is connected to the pliers head seat 3, and the long strip at the rear of the sliding seat 6 extends into the threaded tube of the fixed seat 7 and is connected by a pin. After insertion, the long strip of the sliding seat 6 is located exactly between the gap between the two lobes of the fixed seat 7. The inner pull rod moves back and forth, so that the pull rod pin at its starting end guides the sliding seat 6 so that the long strip of the sliding seat 6 extends from the gap between the upper and lower lobes of the fixed seat 7 and deviates to the side, so that there is a certain angle between the pliers head and the pliers body, thereby realizing the deflection of the pliers head.

[0024] The inner pull rod 8 is located in the clamp tube 9, and its length is longer than the clamp tube. The rear end of the clamp tube 9 is a connecting sleeve 12. The front part of the connecting sleeve 12 is fixed to the rear end of the clamp tube 9 by a plastic plug. The rear part of the connecting sleeve 12 is connected to a connecting sleeve 15. A turning wheel 11 is sandwiched between the plastic plug 10 and the connecting sleeve 15. The turning wheel has an internal thread. The end of the inner pull rod 8 is a milling groove. The sliding rod 13 is fixed to the rear end of the inner pull rod 8 by a clip 14. The sliding rod 13 is located in the connecting sleeve 12. The external thread in the middle of the sliding rod 13 passes through the connecting sleeve 12 and cooperates with the internal thread of the turning wheel. The sliding rod 13 is controlled to move forward or backward by rotating the turning wheel 11, thereby driving the inner pull rod 8 fixed thereto to move forward and backward. The tail end of the connecting sleeve 15 is connected to a connecting tube 16, on which is a rotating wheel seat 17. The rotating wheel seat 17 consists of a tubular seat body and a rotating wheel on the seat body. The rotating wheel seat body is fixed to the top ends of the hinged left and right holding handles by a fixing nut 18. The tail end of the connecting tube 16 is fixedly connected to the rotating wheel, on which a rotating wheel 19 is fixed. By rotating the rotating wheel 19, the entire pliers body can be rotated 360 degrees axially, thereby realizing a 360-degree rotation of the pliers head.

[0025] For the convenience of installation and disassembly, as a preference, the middle portion of the external sleeve 12 is processed into a card slot, the sliding rod 13 is placed in the external sleeve 12, and the sliding rod 13 is fixed to the rear end of the inner pull rod 8 by a clip 14. A card with an external thread is fixed to the middle section of the sliding rod 13, and the threaded card matches the card slot on the external sleeve 12. The card passes through the card slot and matches the internal thread of the turning wheel. This realizes the movement of the sliding rod 13 when the turning wheel 11 is turned, thereby driving the inner pull rod to move forward and backward, and controlling the pliers head to deflect to one side by moving the inner pull rod forward and backward, so that an obtuse angle is formed between the pliers head and the pliers body.

[0026] According to different product sizes, different structures of pliers are selected. In order to facilitate disassembly and installation when changing pliers, a longitudinal through hole is provided at the rear of the pliers, and a spring is installed in the through hole. The top of the spring is fixed in the through hole, and the bottom of the spring is a steel ball. The caliber of the bottom of the through hole is reduced so that the steel ball is exposed to the inferior arc surface. The front of the pliers head seat 3 is provided with a groove with an opening facing forward. The steel ball is compressed so that the rear of the pliers head is located in the groove and fixed by the retaining ring provided at the front end of the groove. The caliber of the retaining ring is equivalent to the outer diameter of the rear of the pliers head. The detachable pliers head in the body can realize 360° rotation in the groove at the front end of the pliers head seat 3 to adjust the best implantation contact surface.

[0027] In order to find the best fulcrum during the product implantation process, the connecting piece between the clamp head seat 3 and the sliding seat 6 is formed of a sphere and a ball handle in one piece. The rear end of the clamp head seat 3 is a spherical groove matching the sphere. The sphere is located in the spherical groove and is fixed at the rear end of the spherical groove by a matching spherical pressure cap 5. The sphere can rotate in the spherical groove of the clamp head seat 3. The spherical pressure cap blocks the invasion of particles from the external environment to ensure the effective operation of the sphere. A groove for fixing the ball handle of the connecting piece is opened in the middle of the front cylindrical head of the sliding seat 6, and the rear end of the clamp head seat 3 is connected to the front end of the sliding seat 6 through the connecting piece.

[0028] During use, when the turning wheel 11 is rotated, the movement of the inner pull rod is used to control the front end of the clamp head to deflect to any angle to the side, so that an angle is formed between the clamp head and the clamp body, and the rotation of the rotating wheel 19 is controlled to drive the entire clamp body to rotate 360 ​​degrees, thereby realizing a 360-degree rotation of the clamp head. Two gripping handles are provided for the user to grasp, and the user can realize the function of the instrument by operating other components after grasping the handles; the displacement and rotation of the clamp head are realized by the turning wheel and the rotating wheel; in the human body under laparoscope, after the product is stretched and shaped by special tools, the clamp is inserted into the channel and clamped at the designated part of the product, and then the clamp head is quickly placed on the affected bone to reposition it by rotating it, thereby shortening the operation time, reducing the difficulty of the operation, and making the fracture treatment more accurate and effective.

Claims

1. A laparoscope clip applier with a detachable clamp head, comprising a clamp body connected to a left and a right holding handle that are hinged to each other, and the clamp body comprising a clamp head seat and a clamp tube; characterized in that: A detachable clamp head (1) is mounted on the front end of the clamp head seat (3), a longitudinal through hole is provided at the rear of the clamp head, a spring is installed in the through hole, the top end of the spring is fixed in the through hole, the bottom end of the spring is a steel ball, the diameter of the bottom end of the through hole is reduced so that the steel ball is exposed on the inferior arc surface, and a groove with an opening facing forward is provided at the front of the clamp head seat (3), and the rear of the clamp head is located in the groove by compressing the steel ball and fixed by a retaining ring provided at the groove mouth; The rear end of the clamp head seat (3) is connected to the front part of the sliding seat (6), the rear part of the sliding seat (6) is a long strip extending into the fixed seat (7) and connected by a pin, the front part of the fixed seat (7) is divided into upper and lower two lobes, the long strip of the sliding seat (6) is located in the gap between the two lobes, the rear part of the fixed seat (7) is a threaded tube matched with the clamp tube (9), the clamp tube (9) is penetrated by an inner pull rod (8) longer than the clamp tube, the front end of the inner pull rod is connected to the rear part of the sliding seat (6), and the inner pull rod (8) is controlled by a turning wheel (11) provided at the rear end of the clamp tube (9) to move forward and backward for guidance, so that the clamp head sliding seat (6) is deflected from between the upper and lower lobes of the fixed seat (7) to the side of the clamp body.

2. The laparoscope clip applier with a detachable clamp head according to claim 1, characterized in that: The front part of the sliding seat (6) is a cylindrical head, which transitions from the cylindrical head to a long strip. The long strip has a sliding hole, and a pull rod pin matching its width is installed in the sliding hole as a guide. The pull rod pin is vertically installed at the beginning of the inner pull rod. By pulling the inner pull rod to move forward and backward, the pull rod pin on it guides the sliding seat (6) so that the long strip of the sliding seat (6) extends from the gap between the upper and lower lobes of the fixed seat (7) and deviates to the side.

3. A laparoscope clip applier with a detachable clamp head according to any one of claims 1 to 2, characterized in that: A connecting sleeve (12) is fixed to the rear end of the clamp tube (9), and a rotating wheel seat (17) is arranged behind the connecting sleeve (12). The seat body of the rotating wheel seat is fixed to the top ends of the left and right holding handles which are hinged to each other. A rotating wheel (19) for controlling the axial rotation of the entire clamp body by 360 degrees is installed on the rotating wheel of the rotating wheel seat (17).

4. The laparoscope clip applier with a detachable clamp head according to claim 3, characterized in that: A sliding rod (13) is fixed to the rear end of the inner pull rod (8), the front of the connecting sleeve (12) is fixed to the rear end of the clamp tube (9) through a plastic plug, the rear of the connecting sleeve (12) is connected to a connecting sleeve (15), a turning wheel (11) is sandwiched between the plastic plug (10) and the connecting sleeve (15), the turning wheel (11) is provided with an internal thread which is threadedly connected to the sliding rod (13) in the connecting sleeve (12), and the sliding rod (13) is controlled by rotating the turning wheel (11) to drive the inner pull rod (8) to move forward and backward.

5. The laparoscope clip applier with a detachable clamp head according to claim 4, characterized in that: The tail of the connecting sleeve (15) is fixedly connected to the rotating wheel of the rotating wheel seat (17) through a connecting pipe (16), and the rotating wheel (19) is fixed on the rotating wheel.

6. A laparoscope clip applier with a detachable clamp head according to claim 2, 4 or 5, characterized in that: It also includes a connecting piece formed by a sphere and a ball handle in one piece, the rear end of the clamp head seat (3) is provided with a spherical groove matching the connecting piece sphere, the sphere is located behind the spherical groove and fixed at the rear end of the spherical groove by a matching spherical pressing cap, the middle part of the front column of the sliding seat (6) is provided with a groove body for fixing the connecting piece ball handle, and the rear end of the clamp head seat (3) is connected to the front end of the sliding seat (6) through the connecting piece.

7. The laparoscope clip applier with a detachable clamp head according to claim 6, characterized in that: The inner diameter of the retaining ring at the groove opening at the front of the clamp head seat (3) is equivalent to the outer diameter of the rear part of the clamp head.

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