Laparoscopic surgery grasping forceps with adjustable grasping surfaces

Abstract

The utility model discloses a laparoscopic surgery grasping forceps with adjustable grasping surfaces, which belongs to the technical field of medical equipment, and comprises an opening and closing part and two tissue clamping pieces, the output end of the opening and closing part extends to form two mutually hinged forceps head clamping pieces, and the two tissue clamping pieces are respectively hinged with the clamping surfaces of the corresponding forceps head clamping pieces. The tissue clamping pieces on the inner sides of the two forcep head clamping pieces can rotate relative to the forcep head clamping pieces, the tissue clamping pieces are parallel to the forcep head clamping pieces before rotation and conveniently enter a sleeve of a laparoscope, the tissue clamping pieces rotate after entering a body cavity, the grasping forceps similar to a T shape are formed, the tissue clamping pieces can be driven by the forcep head clamping pieces to complete opening and closing actions to clamp tissue, and the grasping forceps are convenient to use. Due to the fact that the tissue clamping piece has the large width and is marked with the scales, the length of the clamped tissue can be visually seen after the tissue is clamped, and the function of directly measuring a target organ is achieved while large tissue is clamped and pulled.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical equipment, and specifically relates to a laparoscopic surgery forceps with adjustable holding surface. BACKGROUND

[0002] In medical operations, forceps are a common surgical tool used to hold and fix tissues so that surgeons can operate. Forceps usually consist of a long and thin arm, with the holding part at the front end and the handle at the rear end. The handle part is usually equipped with a closing and opening mechanism to facilitate the surgeon's accurate control of the clamping force and opening angle of the forceps. The holding part has two movable clamping arms, and the surgeon can control the opening and closing of the clamping arms through the handle to clamp or release tissues.

[0003] Although the current forceps basically meet the requirements in clamping, due to the size limitation of the laparoscopic puncture hole (5mm to 10mm), the current forceps generally have a front end tissue clamping piece not exceeding 10mm, but in specific operations, many scenes require wider tissue clamping pieces to clamp more tissues and organs, which is conducive to more efficient pulling of tissues to reveal the surgical field. At the same time, in the process of removing and anastomosing the gastrointestinal tract, sometimes the length of the intestinal tract needs to be measured. The current forceps often need to pull the intestinal canal to measure the length by comparison with a ruler, and due to the great elasticity of the intestinal tract, the error is large in the process of clamping and pulling the intestinal canal by comparison with the traditional forceps, and there is currently a lack of a tool that can clamp and measure the length of the intestinal tract gradually under the natural elasticity of the intestinal tract. SUMMARY

[0004] The utility model aims at providing a laparoscopic surgery forceps with adjustable holding surface, which creatively uses a rotary hinge process to avoid the limitation caused by the small laparoscopic surgery puncture hole, successfully passes the 5mm diameter forceps through the laparoscopic sleeve, and reaches a tissue forceps piece width of at least 50mm after rotation in the body cavity, realizing more efficient tissue clamping, length measurement, and organ pushing and pulling, etc., which will significantly improve the efficiency of laparoscopic surgery.

[0005] The utility model provides a laparoscopic surgery forceps with adjustable holding surface, which comprises:

[0006] An opening and closing part, the output end of the opening and closing part extends two mutually hinged forceps head clamping pieces;

[0007] Two tissue clamping pieces, the two tissue clamping pieces are respectively hinged with the clamping surfaces of the corresponding forceps head clamping pieces.

[0008] As a further scheme of the utility model: the side wall of the tissue clamp piece is marked with a scale. When the tissue clamp piece is rotated to the limit angle relative to the jaw clamp piece, the two tissue clamp pieces can clamp the tissue under the drive of the corresponding jaw clamp piece, and the length of the part of the tissue can be read through the scale on the tissue clamp piece after clamping.

[0009] As a further scheme of the utility model: an interference assembly capable of limiting the rotation angle of the tissue clamp piece is arranged between the tissue clamp piece and the jaw clamp piece.

[0010] As a further scheme of the utility model: the side part of the tissue clamp piece away from the clamping surface is recessed inward to form a matching groove, the protruding part of the tissue clamp piece away from one end of the matching groove forms a first step, and the bottom surface of the matching groove is attached to the clamping surface of the jaw clamp piece after the tissue clamp piece is hinged to the jaw clamp piece. When the tissue clamp piece is in the initial closed state, the jaw clamp piece and the matching groove on the tissue clamp piece are mutually fitted, the jaw clamp piece can be hidden behind the first step of the tissue clamp piece, so that the initial state of the grabbing forceps is in the form of an elongated strip, facilitating the grabbing forceps to enter the abdominal cavity through a small incision.

[0011] As a further scheme of the utility model: the end part of the jaw clamp piece is formed in the shape of a circular arc, and the end part of the jaw clamp piece abuts against the side wall formed between the first step and the matching groove. The part formed in the shape of a circular arc can eliminate the interference between the jaw clamp piece and the tissue clamp piece, so that the tissue clamp piece can be rotated relative to the jaw clamp piece along the part formed in the shape of a circular arc. The other side of the end part of the jaw clamp piece is in the form of a vertical angle, which can interfere with the tissue clamp piece and prevent the tissue clamp piece from being rotated from the other direction. Through this structure, the tissue clamp piece only has a single direction of rotational freedom.

[0012] As a further scheme of the utility model: the protruding part of the tissue clamp piece parallel to the matching groove in the length direction forms a second step. The second step can enhance the limiting ability of the jaw clamp piece, so that the tissue clamp piece will not be rotated in the opposite direction even if it is subjected to a larger force. At the same time, the second step can form an indication mark, which can indicate the direction of rotation of the tissue clamp piece.

[0013] As a further scheme of the utility model: the limit rotation angle range between the tissue clamp piece and the jaw clamp piece is 85°-95°. Within this range, the tissue clamp piece can realize the functions of clamping and measuring. When the angle exceeds this range, the tissue clamp piece and the main part of the grabbing forceps will form an inclination angle, which reduces the operation experience of the operator.

[0014] As a further scheme of the utility model: the limit rotation angle range between the tissue clamp piece and the jaw clamp piece is 88°-92°.

[0015] As a further scheme of the utility model: the limit rotation angle range between the tissue clamp piece and the clamp head piece is 90 DEG. The angle is the best cooperation angle of the tissue clamp piece after rotating to the limit angle and the clamp head piece.

[0016] As a further scheme of the utility model: the clamping surface of the clamp head piece extends outward to form a third step at one end close to the opening and closing part, the reset end of the tissue clamp piece forms a reset notch, and the sidewall of the third step extends along the length direction of the clamp head piece to form a reset block matched with the reset notch. When the tissue clamp piece and the clamp head piece are in the reset state or recover to the reset state from the measurement state, the reset block can prevent the tissue clamp piece from rotating excessively, so that the tissue clamp piece can only rotate in a single direction.

[0017] As a further scheme of the utility model: a plurality of through holes are formed in the length direction of the tissue clamp piece. The through holes can facilitate the observation of the clamped tissue, and avoid the difficulty in reading the length of the tissue due to the shielding of the tissue clamp piece.

[0018] As a further scheme of the utility model: the opening and closing part comprises a fixed head, a pull rod and a scissors support mechanism, the two clamp head pieces are hingedly connected with the fixed head through a hinge, and the pull rod is transmissionally connected with the two clamp head pieces through the scissors support mechanism. The opening and closing control of the two clamp head pieces can be realized through the control of the pull rod and the transmission of the scissors support mechanism, so that the operator can operate the clamp head inside the abdominal cavity from the outer end of the grabber.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] The tissue clamp piece inside the two clamp head pieces can rotate relative to the clamp head piece, and is parallel to the clamp head piece before rotation to facilitate the entry into the trocar of the laparoscope, and rotates after entering the body cavity to form a grabber similar to a T shape. The tissue clamp piece can complete the opening and closing action to clamp the tissue or push and block the tissue organ under the driving of the clamp head piece. Since the tissue clamp piece has a large width and is marked with a scale, the length of the clamped tissue can be directly observed after clamping the tissue, so that the target organ, such as the gastrointestinal tract, can be directly measured while clamping and pulling a large piece of tissue. At the same time, the super-wide tissue clamp piece of the grabber is very suitable for the displacement and operation of some large organs, such as the liver and the colon, and the exposure of the operation field. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from the structures shown in the drawings without any creative effort.

[0022] Figure 1 The overall structure schematic diagram of the grab tongs is provided in the present application.

[0023] Figure 2 The structure schematic diagram of the opening and closing part is provided in the present application.

[0024] Figure 3 The working state diagram of the grab tongs in the measuring state is provided.

[0025] Figure 4 The working state diagram of the grab tongs in the reset state is provided.

[0026] In the drawings: 1, opening and closing part; 11, tong head clamping piece; 111, third step; 112, reset stop block; 12, fixed head; 13, pull rod; 14, scissors support mechanism; 2, organization clamping piece; 21, matching groove; 22, first step; 23, second step; 24, through hole; 25, reset notch. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be described and explained in the following with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the scope of protection of the present application.

[0028] Obviously, the drawings in the following description only represent some examples or embodiments of the present application, and for those skilled in the art, the present application can be applied to other similar situations without any creative effort. In addition, it can be understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in the present application, some design, manufacture or production changes based on the technical content disclosed in the present application are only conventional technical means, and should not be understood as insufficient disclosure of the present application.

[0029] However, there are cases where unnecessary detailed description is omitted. For example, there are cases where detailed description of matters well known, repeated description of substantially the same structure is omitted. This is to avoid the following description unnecessarily becoming lengthy, facilitating understanding by those skilled in the art. In addition, the drawings and the following description are provided to enable those skilled in the art to fully understand the present application, and are not intended to limit the subject matter recited in the claims.

[0030] Referring to Figure 1 As shown in the drawings, in the embodiment of the utility model, a laparoscopic surgery grab pincer with adjustable gripping surface, including open and close part 1 and two tissue clamping pieces 2, the output end of open and close part 1 extends two mutually articulated pincer head clamping pieces 11, two tissue clamping pieces 2 are articulated with the clamping surface of corresponding pincer head clamping piece 11 respectively.

[0031] Open and close part 1 can use existing clamp or gun type pincer to drive, the transmission effect of open and close part 1 makes two pincer head clamping pieces 11 open and close, so that the operator can control the grab pincer inside the abdominal cavity from outside. The end of two pincer head clamping pieces 11 away from open and close part 1 is articulated with a tissue clamping piece 2 respectively, and the articulation part is near the middle of tissue clamping piece 2. When tissue clamping piece 2 rotates to the length direction consistent with the length direction of pincer head clamping piece 11, tissue clamping piece 2 is in reset state at this time, and when tissue clamping piece 2 rotates to a certain angle with pincer head clamping piece 11, tissue clamping piece 2 is in measurement state at this time.

[0032] The opposite surface of two tissue clamping pieces 2 is arranged with ratchet, and the side arranged with ratchet is clamping surface, so as to improve the firmness of clamping. When tissue clamping piece 2 is in reset state, the grab pincer still has the original clamping function, and the clamping end is relatively slender, which can be inserted into the complex condition tissue to clamp the tissue. If it is needed to measure the length of tissue, two tissue clamping pieces 2 are respectively pressed against the tissue, and a slight force is applied to one side, so that two tissue clamping pieces 2 can be rotated out from between pincer head clamping pieces 11, and the grab pincer as a whole forms two clamping ends similar to "T" type after rotating to a certain angle. Scale is arranged on tissue clamping piece 2, and the length of tissue can be measured through the scale above when two tissue clamping pieces 2 clamp the tissue, so that additional measuring tools are not needed, and the scale on tissue clamping piece 2 is measured in cooperation with the video function of laparoscope, which is convenient and fast.

[0033] It needs to be explained again that tissue clamping piece 2 can be designed according to the needs of the contact surface suitable for gastrointestinal tract, liver, lung and even blood vessels and other organs, so the improvement of tissue clamping piece 2 in shape and surface form should be within the protection scope of the present application. For the clamping of intestinal tract, due to the relatively smooth surface of intestinal tract, the one-way ratchet surface on tissue clamping piece 2 may not provide enough friction to fix the intestinal tract, so recesses can be arranged on tissue clamping piece 2 to make the intestinal tract clamped in the recesses to improve the fixing effect.

[0034] An interference assembly is arranged between the tissue clamp piece and the jaw clamp piece to limit the rotation angle of the tissue clamp piece. The angle limited by the interference assembly is limited to enable the grasper to pass through a small incision and to enable the tissue clamp piece to complete the clamping and measuring operation after being deployed in the abdominal cavity. The specific structure of the interference assembly can be represented by the following two embodiments.

[0035] Embodiment 1

[0036] Please refer to Figure 3 and Figure 4 In order to prevent the tissue clamp piece 2 from rotating excessively when it is in the working state and to improve the clamping stability of the tissue clamp piece 2 in the working state, the rotation freedom of the tissue clamp piece 2 needs to be limited. Specifically, the side of the tissue clamp piece 2 other than the clamping surface is recessed to form a matching groove 21, and the hinge point between the jaw clamp piece 11 and the tissue clamp piece 2 is located on the part of the tissue clamp piece 2 on the matching groove 21. At this time, if the tissue clamp piece 2 is in the reset state, the jaw clamp piece 11 is entirely embedded in the matching groove 21. The protruding part of the tissue clamp piece 2 other than the end of the matching groove 21 forms a first step 22. The jaw clamp piece 11 can be hidden behind the first step 22 of the tissue clamp piece 2, so that the grasper in the initial state is in the form of an elongated strip, facilitating the grasper to pass through a small incision and enter the abdominal cavity. When the tissue clamp piece 2 rotates to a certain angle, the first step 22 of the tissue clamp piece 2 touches the jaw clamp piece 11, and the tissue clamp piece 2 cannot continue to rotate under the interference of the jaw clamp piece 11, thereby limiting the rotation angle of the tissue clamp piece 2 within a certain range.

[0037] The end of the jaw clamp piece 11 is formed in a circular arc shape, and the end of the jaw clamp piece 11 abuts against the side wall formed between the first step 22 and the matching groove 21. The part formed in a circular arc can eliminate the interference between the jaw clamp piece 11 and the tissue clamp piece 2, so that the tissue clamp piece 2 can rotate relative to the jaw clamp piece 11 along the part formed in a circular arc. The other side of the end of the jaw clamp piece 11 is in the form of a vertical angle, which can interfere with the tissue clamp piece 2 and prevent the tissue clamp piece 2 from rotating in the other direction. Through this structure, the tissue clamp piece 2 only has a single direction of rotation freedom.

[0038] Further, in order to prevent the tissue clamp piece 2 from rotating excessively when it is in the reset state or when it rotates from the measuring state to the reset state, and to improve the clamping stability of the tissue clamp piece 2 in the reset state, the rotation freedom of the tissue clamp piece 2 can be further limited. Specifically, the protruding part of the tissue clamp piece 2 parallel to the matching groove 21 along the length direction forms a second step 23. When the tissue clamp piece 2 rotates to the reset state, the second step 23 of the tissue clamp piece 2 touches the jaw clamp piece 11, and the tissue clamp piece 2 cannot continue to rotate under the interference of the jaw clamp piece 11, thereby further limiting the rotation freedom of the tissue clamp piece 2 and enhancing the strength of the interference.

[0039] Further, the first step 22 and the second step 23 are perpendicular to each other near one side of the fitting groove 21. At this time, under the restriction of the first step 22 and the second step 23, the tissue clamp 2 can only rotate within a range of 90°. When the tissue clamp 2 is in the reset state, the tissue clamp 2 is parallel to the jaw clamp 11; when the tissue clamp 2 is in the working state, the tissue clamp 2 is perpendicular to the jaw clamp 11.

[0040] Embodiment 2

[0041] As shown in Figure 3 and Figure 4 , embodiment 2 provides another means of restricting the rotation freedom of the tissue clamp 2. The clamping surface of the jaw clamp 11 extends outward to form a third step 111 near one end of the opening and closing part 1, and through the interference action of the third step 111, the tissue clamp 2 is prevented from rotating excessively when it is in the reset state. Specifically, the reset end of the tissue clamp 2 forms a reset notch 25, and the side wall of the third step 111 extends along the length direction of the jaw clamp 11 to form a reset block 112 that cooperates with the reset notch 25. The reset notch 25 and the reset block 112 each form an inclined surface, and through the interference action formed by the contact of the inclined surfaces of the two, the tissue clamp 2 cannot continue to rotate after it is rotated to be parallel to the jaw clamp 11, thereby reducing the difficulty of operating the tissue clamp 2.

[0042] In a specific embodiment, as shown in Figure 3 , the tissue clamp 2 is provided with a plurality of through holes 24 along the length direction, which can facilitate the observation of the clamped tissue and avoid the difficulty of reading the length of the tissue after the tissue clamp 2 blocks the tissue.

[0043] In a specific embodiment, as shown in Figure 1 and Figure 2 , the opening and closing part 1 includes a fixed head 12, a pull rod 13 and a scissors support mechanism 14. The pull rod 13 can move in the length direction through the gun-type clamp control at the front end. The scissors support mechanism 14 includes two connecting rods, which are hinged to the pull rod 13 through a hinge, and the other ends of the two connecting rods are hinged to the two jaw clamps 11 respectively. The two jaw clamps 11 are hinged to the fixed head 12 through a hinge. When the pull rod 13 is pushed forward, the two connecting rods of the scissors support mechanism 14 are opened, and the two jaw clamps 11 are opened correspondingly; on the contrary, when the pull rod 13 is pulled backward, the two jaw clamps 11 are clamped.

[0044] Note that the present application is not limited to the above-described embodiments. The above-described embodiments are merely examples, and embodiments having substantially the same configuration, function, and effect as the technical idea of the present application are included in the technical scope of the present application. Furthermore, other modes constructed by applying various modifications to the embodiments, or by combining part of the configurations of the embodiments, which can be conceived by those skilled in the art, without departing from the spirit of the present application, are also included in the scope of the present application.

Claims

1. A laparoscopic surgical grasping forceps with an adjustable gripping surface, characterized in that, The utility model relates to a kind of surgical forceps, including: Opening and closing part (1), the output of the opening and closing part (1) extends two mutually articulated jaw clamping pieces (11); Two tissue clamping pieces (2), two the tissue clamping pieces (2) are articulated with the clamping surface of corresponding jaw clamping piece (11) respectively, and the side wall of tissue clamping piece (2) is marked with scale.

2. The laparoscopic surgical grasper of claim 1, wherein, Interference component capable of limiting the rotation angle of tissue clamping piece (2) is arranged between tissue clamping piece (2) and jaw clamping piece (11).

3. The laparoscopic surgical grasper of claim 2, wherein, The side portion of tissue clamping piece (2) different from clamping surface is recessed inward to form matching groove (21), the protruding portion of tissue clamping piece (2) different from one end of matching groove (21) forms first step (22), after tissue clamping piece (2) is articulated with jaw clamping piece (11), the bottom surface of matching groove (21) is attached with the clamping surface of jaw clamping piece (11).

4. The laparoscopic surgical grasper of claim 3, wherein, The end of jaw clamping piece (11) is formed in circular arc shape on one side, and the end of jaw clamping piece (11) is abutted on the side wall formed between first step (22) and matching groove (21).

5. The laparoscopic surgical grasper of claim 3, wherein the adjustment mechanism comprises a threaded rod. The protruding portion of tissue clamping piece (2) parallel with matching groove (21) along length direction forms second step (23).

6. A laparoscopic surgical grasper with an adjustable gripping surface according to any one of claims 2-5, wherein, The limit rotation angle range between tissue clamping piece (2) and jaw clamping piece (11) is 85 ° ~ 95 °.

7. The laparoscopic surgical grasper of claim 2, wherein the adjustment mechanism comprises a threaded rod. The clamping surface of jaw clamping piece (11) is extended outward to form third step (111) near one end of opening and closing part (1), the reset end of tissue clamping piece (2) forms reset notch (25), and the side wall of third step (111) extends reset block (112) cooperated with reset notch (25) along the length direction of jaw clamping piece (11).

8. The laparoscopic surgical grasper of claim 1, wherein, A plurality of through holes (24) are formed in tissue clamping piece (2) along length direction.

9. The laparoscopic surgical grasper of claim 1, wherein, The opening and closing part (1) includes fixed head (12), pull rod (13) and scissors support mechanism (14), two jaw clamping pieces (11) are articulated between fixed head (12) through a hinge, and pull rod (13) is drivenly connected between fixed head (12) and two jaw clamping pieces (11) through scissors support mechanism (14).

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