Hemostatic sponge forceps for cardiopulmonary transplantation

Abstract

The invention belongs to the field of sponge forceps, and discloses a pair of cardiopulmonary transplantation hemostatic sponge forceps, which comprises a clamping part, a hemostatic component and an adjusting component, the annular frames are symmetrically arranged on the clamping surfaces of the two clamp arms; the hemostasis assembly comprises a plurality of pressing cylinders evenly distributed in the circumferential direction of the annular frame, a pull wire linked with the multiple pressing cylinders and hemostasis layers arranged on the outer sides of the pressing cylinders. Wherein the pressing cylinders are arranged to have convergent motion freedom degrees towards the central axis of the annular frame, when the adjusting knob is operated to tighten the traction line, all the pressing cylinders synchronously move inwards in the radial direction to form a dynamic contraction ring structure, the hemostasis layer forms a continuous pressure applying face matched with the outer wall of a blood vessel, and through radial sliding fit of the pressing cylinders which are evenly distributed in the circumferential direction and the annular frame, the continuous pressure applying face is formed. A contraction ring structure with the diameter capable of being dynamically adjusted is formed by combining a synchronous contraction mechanism of a traction line, and the stress uniformity of a suture line is improved by applying multiple circumferential pressures to the vascular suture line, so that local high-pressure points caused by a traditional rigid forceps holder can be weakened.

Description

Technical Field

[0001] The present disclosure belongs to the field of sponge forceps, and particularly relates to a hemostatic sponge forceps for cardiopulmonary transplantation. Background Art

[0002] In the field of cardiopulmonary transplantation surgery, bleeding at the pulmonary artery anastomosis is a common problem after surgery that needs to be dealt with promptly. Currently, the prior art usually uses a hemostatic forceps to press hemostatic substances such as sponges and gelatin at the suture of the pulmonary artery anastomosis to achieve hemostasis by compression.

[0003] However, this hemostatic method has obvious defects. Since the blood vessels at the pulmonary artery anastomosis are relatively fragile, when the side of the cutting edge of the hemostatic forceps clamps the blood vessels, the blood vessels will be deformed into a flat shape under the compression of the hemostatic forceps; clamping with the jaws will also cause the blood vessels to be flattened and deformed, and then the tightened areas at both ends of the blood vessels will bear a large tension, which is extremely likely to cause the suture to break and cause secondary damage. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present disclosure is to provide a hemostatic sponge forceps for cardiopulmonary transplantation, which solves the problem that in the prior art, since the blood vessels are deformed into a flat shape under the compression of the flat hemostatic forceps, at this time, the tightened areas at both ends of the flat blood vessels need to bear a large tension, thus easily causing the suture to break and causing secondary damage.

[0005] The purpose of the present disclosure can be achieved by the following technical solutions:

[0006] The hemostatic sponge forceps for cardiopulmonary transplantation includes: a clamping part, a hemostatic component, and an adjusting component;

[0007] The hemostatic forceps body includes a pair of relatively opening and closing forceps arms and a clamping part provided at the end of the forceps arms, and a handle part is fixed on the side of the forceps arms away from the clamping part;

[0008] An annular frame is rotatably connected to the inner side of the forceps arms, and the annular frame is symmetrically arranged on the clamping surfaces of the two forceps arms;

[0009] The hemostatic component includes a plurality of pressing cylinders evenly distributed along the circumference of the annular frame, a traction wire linked to the plurality of pressing cylinders, and a hemostatic layer provided on the outside of the pressing cylinders. The pressing cylinders form a radial sliding fit with the annular frame through a slide rail pair;

[0010] The adjusting component includes an adjusting knob provided near the handle part. One end of the traction wire away from the hemostatic component is wound around the outside of the adjusting knob, and the outside of the traction wire contacts the plurality of pressing cylinders respectively;

[0011] Among them, the pressing cylinder is set to have a degree of freedom of convergent movement towards the central axis of the annular frame. When the adjustment knob is operated to tighten the traction wire, each pressing cylinder synchronously moves radially inwards to form a dynamic contraction ring structure, and the hemostatic layer constitutes a continuous pressing surface adapted to the outer wall of the blood vessel.

[0012] In some disclosures, a rotating seat is fixed on one side of the clamp arm close to the clamping part, a rotating shaft adapted to the rotating seat is fixed in the middle of the annular frame, and an arc-shaped telescopic rod is fixed on the outer wall of the annular frame, and the rotation axis of the arc-shaped telescopic rod coincides with the central axis of the rotating shaft.

[0013] In some disclosures, the arc-shaped telescopic rod is composed of an arc-shaped sliding sleeve and an arc-shaped guide rod sleeved with each other, the arc-shaped sliding sleeve is fixedly connected with the clamp arm, and the end of the arc-shaped guide rod is fixedly connected with the outer wall of the annular frame.

[0014] In some disclosures, the slide rail pair includes a guiding groove arranged on the side wall of the annular frame and penetrating through the annular frame, and a protrusion adapted to the guiding groove is arranged at the upper end of the pressing cylinder. The direction of the guiding groove points to the central axis of the annular frame, and the moving path of the pressing cylinder is the same as that of the guiding groove.

[0015] In some disclosures, a wire groove is opened on one side of the pressing cylinder away from the central axis of the annular frame, the traction wire is located inside the wire groove, and the traction wire is arranged along the direction of the wire guiding groove and forms a sliding contact with the groove wall.

[0016] In some disclosures, support plates are fixed on both the upper and lower sides of the annular frame, a plurality of annular grooves are equidistantly arranged on the inner side of the support plates, and both the upper and lower ends of the hemostatic layer are clamped inside the annular grooves.

[0017] In some disclosures, the hemostatic layer includes a flexible layer and a support rod. The support rod is clamped between the upper and lower two annular grooves, a flexible layer is coated on the outer side of the support rod, and the hemostatic layer is a three-dimensional porous sponge structure and is made of a biodegradable material.

[0018] In some disclosures, a buckle and a clamping groove that cooperate with each other are respectively fixed at both ends of the flexible layer. The buckle is a snap-in part capable of elastic deformation, and the inner side of the clamping groove matches the buckle. When the two clamp arms are relatively unfolded, the buckle and the clamping groove move circumferentially towards each other along the hinge of the two clamp arms, and the buckle is embedded in the clamping groove to make the flexible layer form an annular closed structure. At this time, the inner surface of the flexible layer forms a full circumferential contact surface with the outer wall of the blood vessel.

[0019] In some disclosures, a support shell is fixed at the hinge of the two clamp arms, and a through hole penetrating through the support shell is opened at one end of the support shell close to the clamping part.

[0020] In some disclosures, a first roller and a second roller arranged in parallel are provided inside the support shell, wherein the first roller is disposed adjacent to the through hole and is rotatably connected to the support shell, the second roller is fixedly connected to the adjustment knob, the traction lines on the inner sides of the two annular frames are merged into a single-strand wire body before entering the support shell, and this single-strand wire body passes through the through hole and then winds around the second roller and the first roller in sequence. The end of the wound traction line branches into two strands and is respectively fixed to the inner sides of the two annular frames.

[0021] The explanations of the nouns, conjunctions or adjectives involved in the above technical solution are as follows:

[0022] Fixed connection means that after the parts or components are fixed, there is no relative movement between them;

[0023] Rotational connection means that the connection between parts allows the parts to rotate relative to each other;

[0024] Threaded connection is a detachable fixed connection, which has the advantages of simple structure, reliable connection, convenient assembly and disassembly, etc., and is widely used in the fields of mechanical engineering and connection structures;

[0025] Sliding connection means that the connection between parts allows the parts to slide relative to each other.

[0026] Advantages of the present disclosure:

[0027] 1. Through the radial sliding fit between the circumferentially evenly distributed pressing cylinders and the annular frames, combined with the synchronous winding mechanism of the traction lines, a shrinkage ring structure with a dynamically adjustable diameter is formed. By applying multiple circumferential pressures to the vascular suture, the stress uniformity of the suture is improved, which is beneficial to weakening the local high-pressure points caused by traditional rigid clamping. By increasing the stress points of the suture, the tensioned areas brought by each stress point are dispersed, thereby reducing the tension intensity of the tensioned areas and being beneficial to reducing the breakage of the suture in the tensioned areas;

[0028] 2. Through the resistance feedback mechanism when the traction line is tightened by the adjustment knob, doctors can quantitatively judge the tightness of the fit between the hemostatic layer and the anastomosis, reducing the problems of excessive local pressure or insufficient fit caused by experience differences of traditional hemostatic forceps;

[0029] 3. By arranging multiple storage positions for the hemostatic layer on the inner side of the annular frame, doctors can complete the deployment of the hemostatic layer in different suture areas without replacing the hemostatic forceps, which is beneficial to shortening the operation time. Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 is the overall structural schematic diagram of an embodiment of the present disclosure;

[0032] Figure 2 is an embodiment of the present disclosure Figure 1 overall structural schematic diagram from another perspective;

[0033] Figure 3 is the overall structural schematic diagram of the annular frame and the hemostatic component of an embodiment of the present disclosure;

[0034] Figure 4 is the overall structural schematic diagram of the interior of the annular frame of an embodiment of the present disclosure;

[0035] Figure 5 is the overall structural schematic diagram of the flexible layer of an embodiment of the present disclosure;

[0036] Figure 6 is the overall structural schematic diagram of the interior of the flexible layer of an embodiment of the present disclosure;

[0037] Figure 7 is the overall structural schematic diagram of the support - removing shell of an embodiment of the present disclosure.

[0038] In the figure: 1. Forceps arm; 101. Rotating seat; 2. Clamping part; 3. Handle part; 4. Annular frame; 41. Guide groove; 42. Rotating shaft; 43. Arc - shaped telescopic rod; 44. Support plate; 431. Arc - shaped sliding sleeve; 432. Arc - shaped guide rod; 441. Annular groove; 5. Hemostatic component; 51. Pressing cylinder; 52. Traction line; 53. Hemostatic layer; 511. Wire groove; 512. Protrusion; 531. Flexible layer; 532. Support rod; 5311. Buckle; 5312. Card slot; 6. Adjusting component; 61. Adjusting knob; 62. First roller; 63. Second roller; 7. Support shell; 71. Through hole; Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present disclosure.

[0040] Please refer to Figures 1 to 7 , a hemostatic sponge forceps for cardiopulmonary transplantation, comprising: a clamping part 2, a hemostatic component 5 and an adjusting component 6;

[0041] The hemostatic forceps body includes a pair of relatively opening and closing forceps arms 1 and a clamping part 2 provided at the end of the forceps arms 1, and a handle part 3 is fixed to the side of the forceps arms 1 away from the clamping part 2;

[0042] An annular frame 4 is rotatably connected to the inner side of the pliers arm 1, and the annular frames 4 are symmetrically arranged on the clamping surfaces of the two pliers arms 1;

[0043] The hemostasis assembly 5 includes a plurality of pressing cylinders 51 evenly distributed circumferentially along the annular frame 4, a traction wire 52 linked to the plurality of pressing cylinders 51, and a hemostasis layer 53 arranged outside the pressing cylinders 51. The pressing cylinders 51 form a radial sliding fit with the annular frame 4 through a slide rail pair;

[0044] The adjusting assembly 6 includes an adjusting knob 61 arranged near the handle part 3. One end of the traction wire 52 far from the hemostasis assembly 5 is wound around the outside of the adjusting knob 61, and the outside of the traction wire 52 contacts the plurality of pressing cylinders 51 respectively;

[0045] Wherein, the pressing cylinder 51 is set to have a degree of freedom of convergent movement towards the central axis of the annular frame 4. When the adjusting knob 61 is operated to tighten the traction wire 52, each pressing cylinder 51 synchronously moves radially inwards to form a dynamic contraction ring structure, and the hemostasis layer 53 constitutes a continuous pressing surface adapted to the outer wall of the blood vessel.

[0046] During use, the doctor controls the handle part 3 of the pliers arm 1 with the thumb, palm and middle finger. After the clamping part 2 approaches the blood vessel anastomosis, the hemostasis layers 53 on the two annular frames 4 are buckled outside the blood vessel suture. At this time, the hemostasis assembly 5 is in contact with the oozing blood. At this time, the doctor adjusts the knob 61 with the index finger, so that the traction wire 52 is wound around the adjusting knob 61, so that the other end of the traction wire 52 is stretched from a loose state to a taut state. At the same time, when the traction wire 52 is tensioned, it drags a plurality of pressing cylinders 51 located outside the blood vessel suture to slide towards the side close to the blood vessel, so that the diameter of the ring formed by the pressing cylinders 51 is reduced, and the pressure applied to the blood vessel suture is evenly distributed by the plurality of pressing cylinders 51, so that the suture remains annular after being pressed. Compared with traditional rigid pliers, the blood vessel suture is compressed and deformed into a flat shape, and both ends of the flat suture are in a tensioned area, which is likely to cause breakage at the suture and thus cause secondary injury. Through the synchronous radial displacement of the circumferentially evenly distributed pressing cylinders 51 under the action of the traction wire, the hemostasis pressure is evenly distributed along the circumference of the blood vessel, effectively overcoming the problem of local stress concentration caused by traditional rigid clamping.

[0047] Please refer to Figures 1 to 3 A rotating seat 101 is fixed to one side of the pliers arm 1 close to the clamping part 2, and a rotating shaft 42 adapted to the rotating seat 101 is fixed to the middle of the annular frame 4. And an arc-shaped telescopic rod 43 is fixed to the outer wall of the annular frame 4, and the rotation axis of the arc-shaped telescopic rod 43 coincides with the central axis of the rotating shaft 42.

[0048] Please refer to Figures 3 to 4, the arc telescopic rod 43 is composed of an arc sliding sleeve 431 and an arc guide rod 432 that are sleeved with each other. The arc sliding sleeve 431 is fixedly connected to the clamp arm 1, and the end of the arc guide rod 432 is fixedly connected to the outer wall of the annular frame 4.

[0049] During use, insert the central axis of the rotating shaft 42 into the hole in the rotating seat 101. When bleeding occurs at the blood vessel suture, the two symmetrically arranged annular frames 4 can be buckled outside the blood vessel. After buckling, the outer walls of the two annular frames 4 wrap the outer wall of the blood vessel suture. If the doctor's hand aches when pressing the bleeding point around the blood vessel suture for a long time to stop bleeding, the doctor can adjust the position of the handle part 3 to make the annular frame 4 rotate around the rotating shaft 42 as the center of the circle. At the same time, the arc telescopic rod 43 makes telescopic adjustments. Using the arc telescopic rod 43 to guide the rotation trajectory of the annular frame 4 is beneficial to improving the stability of the connection between the annular frame 4 and the rotating seat 101. And as the position of the doctor's handle part 3 changes and the hand moves, it can relax the doctor's operating hand and reduce the fatigue of the doctor's hand. On the premise of keeping the hemostatic pressure constant, the doctor is allowed to adjust the holding angle, meeting the requirements of ergonomic operation.

[0050] Please refer to Figure 1 and Figure 7 , the slide rail pair includes a guiding groove 41 provided on the side wall of the annular frame 4 and penetrating through the annular frame 4, and a protrusion 512 adapted to the guiding groove 41 is provided at the upper end of the pressing cylinder 51. The direction of the guiding groove 41 points to the central axis of the annular frame 4, and the moving path of the pressing cylinder 51 is the same as the moving path of the guiding groove 41.

[0051] Please refer to Figure 3 and Figure 4 , a wire groove 511 is opened on the side of the pressing cylinder 51 away from the central axis of the annular frame 4, and the traction wire 52 is located inside the wire groove 511. The traction wire 52 is arranged along the direction of the wire groove 511 and forms a sliding contact with the groove wall.

[0052] Since the traction wire 52 is located outside the pressing cylinder 51 and is arranged around the pressing cylinder 51, when one end of the traction wire 52 is pulled, the traction wire 52 contracts inward, shortening the arc diameter formed by the traction wire 52. While the diameter of the traction wire 52 shortens, it drives the pressing cylinder 51 to move along the guiding groove 41 towards the central axis of the annular frame 4. During use, through the cooperation of the guiding groove 41 and the protrusion 512, the radial movement trajectory of the pressing cylinder 51 is restricted, which is beneficial for the doctor to control the pressing cylinder 51 through the traction wire 52 on the outside after the clamping part 2 clamps the blood vessel, causing the pressing cylinder 51 to gather inward, thereby controlling the degree of fit between the hemostatic layer 53 and the blood leakage point of the blood vessel, so as to compress and stop bleeding at the blood leakage points around the blood vessel suture. By pressing the blood vessel with multiple pressing cylinders 51, the pressure uniformity is improved compared with the traditional single-point pressing method, and the damage to the blood vessel suture is reduced. During the continuous compression process, the pressure fluctuation caused by the blood vessel pulsation can be compensated in real time by finely adjusting the tension of the traction wire 52, significantly reducing the risk of mechanical injury to the blood vessel intima. This dynamic adaptive ability can effectively buffer the impact brought by the blood vessel pulsation, which is beneficial to improving the safety of the blood vessel during the hemostasis process.

[0053] Please refer to Figures 1 to 7 On both the upper and lower sides of the annular frame 4, support plates 44 are fixedly arranged, and a plurality of annular grooves 441 are equidistantly arranged inside the support plates 44, and both the upper and lower ends of the hemostatic layer 53 are clamped inside the annular grooves 441.

[0054] During use, a plurality of hemostatic layers 53 are respectively clamped in the corresponding upper and lower annular grooves 441. When the pressing cylinder 51 moves along the guiding groove 41 towards the side close to the central axis of the annular frame 4, the pressing cylinder 51 squeezes the hemostatic layer 53 to make the hemostatic layer 53 closest to the central axis of the annular frame 4 separate from the annular groove 441 and fit with the blood leakage point of the blood vessel, while the hemostatic layers 53 in the remaining annular grooves 441 simultaneously move towards the annular groove 441 on the side close to the central axis of the annular frame 4. Since the plurality of hemostatic layers 53 are relatively independent of each other, and for the hemostatic layer 53 closest to the blood vessel, the side away from the blood vessel is not in direct contact with the blood, the adjacent hemostatic layers 53 can be kept dry. When it is necessary to stop bleeding at multiple blood leakage points, in the traditional method, the pliers need to be taken out, the hemostatic layer 53 needs to be replaced, and then the hemostatic layer 53 needs to be put back on the outer wall of the blood vessel to stop bleeding at multiple blood leakage points. However, in this application, a plurality of hemostatic layers 53 are arranged at the clamping part 2. After the hemostatic layer 53 closest to the central axis of the annular frame 4 is separated from the annular groove 441, the adjacent hemostatic layers 53 move outward to facilitate fitting with the blood vessel. When the doctor needs to continuously stop bleeding at multiple blood leakage points, the time for replacing the hemostatic layer 53 can be reduced.

[0055] Please refer to Figures 5 to 6, the hemostatic layer 53 includes a flexible layer 531 and a support rod 532. The support rod 532 is clamped between two upper and lower annular grooves 441, and the outer side of the support rod 532 is covered with a flexible layer 531. The hemostatic layer 53 is a three-dimensional porous sponge structure and is made of a biodegradable material.

[0056] During use, the flexible layer 531 is formed by electrospinning among oxidized regenerated cellulose, silk fibroin, and ε-polylysine. The shape of the flexible layer 531 is an annular strip with non-connected head and tail. The flexible layer 531 has a certain elastic deformation ability, enabling it to better fit the blood vessel. The oxidized regenerated cellulose forms a gel when encountering blood and can gel in time. It is made to be soluble in the outer wall of the blood vessel. After the flexible layer 531 and the support rod 532 are in the body for a long time, they can be absorbed by the human body, so there is no need to take them out additionally, which is beneficial to improving the safety of the operation.

[0057] Please refer to Figures 5 to 6 , both ends of the flexible layer 531 are respectively fixedly connected with a matching buckle 5311 and a clamping groove 5312. The buckle 5311 is a snap-in part capable of elastic deformation, and the inner side of the clamping groove 5312 matches the buckle 5311. When the two clamping arms 1 are unfolded relatively, the buckle 5311 and the clamping groove 5312 move circumferentially in opposite directions along the hinge of the two clamping arms 1. The buckle 5311 is embedded in the clamping groove 5312 to make the flexible layer 531 form an annular closed structure. At this time, the inner surface of the flexible layer 531 forms a full circumferential contact surface with the outer wall of the blood vessel.

[0058] During use, both ends of the flexible layer 531 are respectively fixed on the annular frames 4 at the ends of the two clamping arms 1. When the two clamping arms 1 are opened, the buckles 5311 and the clamping grooves 5312 on the flexible layer 531 move in opposite directions. At this time, the self-adaptive deformation characteristics of the flexible layer 531 during the opening and closing of the clamping arms 1 are beneficial to accommodating the wrapping requirements of blood vessels with different diameters, with strong clinical adaptability. The annular closed structure forms a double fixed fulcrum, significantly improving the stability of the outer membrane fixation of the blood vessel and effectively preventing the displacement of the flexible layer 531 during the operation.

[0059] Please refer to Figure 1 、 Figure 3 and Figure 7 , a support shell 7 is fixed at the hinge of the two clamping arms 1, and a through hole 71 penetrating the support shell 7 is opened at one end of the support shell 7 close to the clamping part 2;

[0060] A first roller 62 and a second roller 63 are arranged in parallel in the support shell 7. The first roller 62 is arranged adjacent to the through hole 71 and is rotatably connected to the support shell 7. The second roller 63 is fixedly connected to the adjusting knob 61. The traction wires 52 on the inner sides of the two annular frames 4 are combined into a single-strand wire body before entering the support shell 7. The single-strand wire body passes through the through hole 71 and then winds around the second roller 63 and the first roller 62 in sequence. The end of the wound traction wire 52 branches into two strands and is respectively fixed to the inner sides of the two annular frames 4.

[0061] When the adjusting knob 61 is rotated, the second roller 63 rotates synchronously and winds up the traction wire 52. At this time, the first roller 62 guides the traction wire 52 to form an S-shaped winding path. The tension of the traction wire 52 changes positively with the rotation resistance of the adjusting knob 61.

[0062] During use, the end of the traction wire 52 is branched. After branching, the two ends of the traction wire 52 are respectively fixed to the inner sides of the annular frames 4. The end of the traction wire 52 away from the annular frames 4 passes through the through hole 71 and winds around the outer sides of the first roller 62 and the second roller 63 in sequence. When in use, the doctor rotates the adjusting knob 61 and drives the second roller 63 to rotate through the adjusting knob 61, so that the originally less-tensioned traction wire 52 is gradually tightened. During the tightening process, the rotation resistance of the adjusting knob 61 will increase. During the operation, the doctor judges the blood vessel pressing condition through the resistance change of the adjusting knob 61.

[0063] The following further describes the cardiopulmonary transplantation hemostatic sponge forceps provided by the present invention in conjunction with the drawings and embodiments.

[0064] Before use, a plurality of hemostatic layers 53 are installed in the annular groove 441. At the same time, the upper and lower ends of the support rod 532 are respectively attached to the inner wall of the annular groove 441, thereby fixing the hemostatic layer 53 in the annular groove 441. When in use, the doctor holds the handle portion 3 of the forceps arm 1. At the same time, the doctor's index finger presses the adjusting knob 61, and places the clamping portion 2 of the forceps arm 1 into the patient's body in a clamped state. When the clamping portion 2 approaches the blood vessel anastomosis, the two annular frames 4 and the hemostatic layer 53 are buckled outside the blood vessel suture. At this time, the buckle 5311 on the hemostatic layer 53 closest to the central axis of the annular frame 4 is elastically deformed and buckled into the corresponding card slot 5312, and at the same time, the flexible layer 531 wraps around the outer wall of the blood vessel suture.

[0065] At this time, the doctor rotates the adjustment knob 61, drives the second roller 63 to rotate through the adjustment knob 61, and drives the first roller 62 to rotate, so as to tighten the end of the traction line 52 close to the annular frame 4 inward. During the tightening process, it drives a plurality of pressing cylinders 51 to slide along the guide groove 41 toward the side close to the central axis of the annular frame 4, thereby reducing the diameter of the ring formed by the plurality of pressing cylinders 51, and driving a plurality of hemostatic layers 53 to move toward the side close to the annular frame 4. The innermost hemostatic layer 53, that is, the one closest to the central axis of the annular frame 4, detaches from the inside of the annular groove 441. A plurality of pressing cylinders 51 press the blood vessel suture, causing blood coagulation at the bleeding point. At the same time, after hemostasis is completed, since the innermost hemostatic layer 53 is buckled after the buckle 5311 and the clamping groove 5312 are engaged, when the forceps arms 1 are opened and closed again, the innermost hemostatic layer 53 is fixed outside the blood vessel. Without replacing the hemostatic layer 53, the doctor can move the hemostatic forceps to the bleeding point again for continuous hemostasis.

[0066] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] The above shows and describes the basic principles, main features and advantages of the present disclosure. Those skilled in the art of this industry should understand that the present disclosure is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present disclosure. Without departing from the spirit and scope of the present disclosure, the present disclosure will have various changes and improvements, and these changes and improvements all fall within the scope of the present disclosure claimed.

Claims

1. Hemostatic sponge forceps for cardiopulmonary transplantation, characterized in that, Comprising: A clamping part (2), a hemostatic component (5) and an adjusting component (6); The hemostatic forceps body comprises a pair of relatively opening and closing forceps arms (1) and a clamping part (2) arranged at the end of the forceps arms (1), and a handle part (3) is fixed on one side of the forceps arms (1) far away from the clamping part (2); An annular frame (4) is rotatably connected to the inner side of the forceps arms (1), and the annular frame (4) is symmetrically arranged on the clamping surfaces of the two forceps arms (1); The hemostatic component (5) comprises a plurality of pressing cylinders (51) evenly distributed along the circumference of the annular frame (4), a traction wire (52) linked with the plurality of pressing cylinders (51), and a hemostatic layer (53) arranged outside the pressing cylinders (51), and the pressing cylinders (51) form a radial sliding fit with the annular frame (4) through a slide rail pair; The adjusting component (6) comprises an adjusting knob (61) arranged near the handle part (3), one end of the traction wire (52) far away from the hemostatic component (5) is wound outside the adjusting knob (61), and the outer side of the traction wire (52) contacts with the plurality of pressing cylinders (51) respectively; Wherein, the pressing cylinders (51) are arranged to have a freedom of convergent movement towards the central axis of the annular frame (4). When the adjusting knob (61) is operated to tighten the traction wire (52), the pressing cylinders (51) synchronously move radially inwards to form a dynamic contraction ring structure, and the hemostatic layer (53) constitutes a continuous pressing surface adapted to the outer wall of the blood vessel.

2. The hemostatic sponge forceps for cardiopulmonary transplantation according to claim 1, characterized in that A rotating seat (101) is fixed on one side of the forceps arms (1) near the clamping part (2), a rotating shaft (42) adapted to the rotating seat (101) is fixed in the middle of the annular frame (4), and an arc-shaped telescopic rod (43) is fixed on the outer wall of the annular frame (4), and the rotating axis of the arc-shaped telescopic rod (43) coincides with the central axis of the rotating shaft (42).

3. The hemostatic sponge forceps for cardiopulmonary transplantation according to claim 2, wherein The arc-shaped telescopic rod (43) is composed of an arc-shaped sliding sleeve (431) and an arc-shaped guide rod (432) which are sleeved with each other, and the arc-shaped sliding sleeve (431) is fixedly connected with the forceps arms (1), and the end of the arc-shaped guide rod (432) is fixedly connected with the outer wall of the annular frame (4).

4. The hemostatic sponge forceps for cardiopulmonary transplantation according to claim 3, characterized in that, The slide rail pair comprises a guiding groove (41) arranged on the side wall of the annular frame (4) and penetrating through the annular frame (4), and a protrusion (512) adapted to the guiding groove (41) is arranged at the upper end of the pressing cylinder (51), and the direction of the guiding groove (41) points to the central axis of the annular frame (4), and the moving path of the pressing cylinder (51) is the same as the moving path of the guiding groove (41).

5. The hemostatic sponge forceps for cardiopulmonary transplantation according to claim 4, characterized in that, A wire groove (511) is formed on one side of the pressing cylinder (51) far away from the central axis of the annular frame (4), and the traction wire (52) is located inside the wire groove (511), and the traction wire (52) is arranged along the direction of the wire guiding groove (511) and forms a sliding contact with the groove wall.

6. The hemostatic sponge forceps for cardiopulmonary transplantation according to claim 5, wherein, Support plates (44) are fixed on both the upper and lower sides of the annular frame (4), and a plurality of annular grooves (441) are equidistantly arranged on the inner side of the support plates (44), and both the upper and lower ends of the hemostatic layer (53) are clamped inside the annular grooves (441).

7. The hemostatic sponge forceps for cardiopulmonary transplantation according to claim 6, characterized in that The hemostatic layer (53) includes a flexible layer (531) and a support rod (532). The support rod (532) is engaged between two upper and lower annular grooves (441), and the outer side of the support rod (532) is covered with the flexible layer (531). The hemostatic layer (53) is a three-dimensional porous sponge structure and is made of a biodegradable material.

8. The hemostatic sponge forceps for cardiopulmonary transplantation according to claim 7, wherein, Both ends of the flexible layer (531) are respectively fixedly connected with a matching buckle (5311) and a clamping groove (5312). The buckle (5311) is a buckling part capable of elastic deformation, and the inner side of the clamping groove (5312) matches the buckle (5311). When the two clamp arms (1) are unfolded relatively, the buckle (5311) and the clamping groove (5312) move circumferentially and towards each other along the hinge of the two clamp arms (1). The buckle (5311) is inserted into the clamping groove (5312) to make the flexible layer (531) form an annular closed structure. At this time, the inner surface of the flexible layer (531) forms a full circumferential contact surface with the outer wall of the blood vessel.

9. The hemostatic sponge forceps for cardiopulmonary transplantation according to claim 1, wherein, A support shell (7) is fixed at the hinge of the two clamp arms (1), and a through hole (71) penetrating the support shell (7) is opened at one end of the support shell (7) close to the clamping part (2).

10. The hemostatic sponge forceps for cardiopulmonary transplantation according to claim 9, wherein A first roller (62) and a second roller (63) are arranged in parallel in the support shell (7). The first roller (62) is arranged adjacent to the through hole (71) and is rotationally connected with the support shell (7). The second roller (63) is fixedly connected with an adjusting knob (61). The traction wires (52) on the inner sides of the two annular frames (4) are combined into a single-strand wire body before entering the support shell (7). The single-strand wire body passes through the through hole (71) and then winds around the second roller (63) and the first roller (62) in sequence. The end of the wound traction wire (52) branches into two strands and is respectively fixed to the inner sides of the two annular frames (4).

Images