A foldable hemostatic device

Abstract

The present invention relates to a foldable hemostatic device, which belongs to the field of medical devices. The foldable hemostatic device includes a handle, a support assembly and an electrode assembly, the support assembly includes a first folding arm, a second folding arm and a bending assembly, the second folding arm is connected to the handle, the first folding arm and the second folding arm are hinged and the bending is controlled by the bending assembly; the electrode assembly includes a folding assembly and at least two electrodes, and the electrodes can be independently unfolded or folded. The foldable hemostatic device controls the direction of the electrode assembly through the support assembly, and the electrodes of the electrode assembly can rotate independently, so that the electrodes can change direction and unfold or fold. The foldable hemostatic device can be conveniently inserted into the part that needs hemostasis, and can achieve ultra-large range, strong and effective hemostasis; multiple electrodes have different arrangements, which are suitable for hemostasis of parts of different shapes; the electrode changes direction under the drive of the first folding arm, which can achieve hemostasis of tissues in different parts.

Description

Technical Field

[0001] The invention belongs to the field of medical devices, and in particular relates to a foldable hemostatic device. Background Art

[0002] At present, abdominal and thoracic surgeries usually adopt an "open" method, that is, the patient's abdominal or thoracic cavity is cut open, the diseased organs are exposed, and the surgery is performed in an open state. This open surgery is extremely harmful to the patient, the patient's recovery period after surgery is very long, the pain is obvious, and the hospitalization cost is high.

[0003] In the future, endoscopic minimally invasive surgery will definitely be the main trend in abdominal or thoracic surgery and other surgical procedures, such as endoscopic liver resection.

[0004] The liver is densely covered with blood vessels and rich in blood; liver resection surgery has very high requirements for hemostasis and requires the use of powerful and effective hemostatic devices.

[0005] However, electrosurgical hemostatic devices are often used in liver resection, such as electric knives, electrocoagulation forceps, ultrasonic knives, electrocoagulation forceps, etc.; these hemostatic devices are usually used for surface hemostasis, with a small hemostatic depth and range, and low hemostatic efficiency when performing large-scale cutting operations. In addition, the above hemostatic devices are bulky and cannot pass through a smaller-caliber puncture (inner diameter 5-15mm) or endoscope; they can only be used for open surgery and are not suitable for endoscopic surgery. Smaller hemostatic devices usually have weaker hemostatic ability and cannot meet the hemostatic requirements of dry resection surgery. The lack of hemostatic devices that can be used for endoscopic operations makes endoscopic liver resection difficult to achieve. Summary of the invention

[0006] In view of this, the purpose of the embodiment of the present invention is to provide a foldable hemostatic device, which controls the direction of the electrode assembly through the support assembly, and the electrodes of the electrode assembly can rotate independently, so that the electrodes can change direction and unfold or fold. When the electrode is folded, the volume is small, and a puncture device (inner diameter 5-15mm) or an endoscope can be easily inserted into the part that needs hemostasis. When the electrode is unfolded, the volume is large, which can achieve ultra-large-scale, powerful and effective hemostasis; and because the electrode can rotate independently, multiple electrodes have different arrangements, which are suitable for hemostasis of parts of different shapes; in addition, the electrode changes direction under the drive of the first folding arm, which can achieve hemostasis of tissues in different parts, and the operation is simpler and faster.

[0007] The embodiment of the present invention is achieved as follows:

[0008] An embodiment of the present invention provides a foldable hemostatic instrument, which includes a handle, a support assembly and an electrode assembly.

[0009] The support assembly includes a first folding arm, a second folding arm and a bending assembly, wherein the second folding arm is connected to the handle, the first folding arm and the second folding arm are hinged, and the bending assembly is configured to control the first folding arm to bend relative to the second folding arm.

[0010] The electrode assembly includes a folding assembly and at least two electrodes, the electrode includes a rotating part, a connecting part and a folding part connected in sequence, the center line of the folding part does not coincide with the center line of the rotating part, the rotating part is arranged at the end of the first folding arm and is driven to rotate by the folding assembly, so that the folding part rotates around the center line of the rotating part to achieve independent unfolding or folding of the electrode.

[0011] As an optional solution of the above embodiment, the bending assembly includes a control part and an execution part, the execution part is arranged at the hinge of the first folding arm and the second folding arm and is driven by the control part, and the execution part is configured to drive the first folding arm to passively swing relative to the second folding arm.

[0012] As an optional solution of the above embodiment, the execution part includes an active member, a driven member and a locking member, the driven member is fixed to the first folding arm and has at least two locking grooves, the control part drives the driven member to rotate through the active member, the locking member is fixed to the second folding arm, and the locking member is selectively inserted into one of the locking grooves and can be disengaged from the locking groove under the action of the active member.

[0013] As an optional scheme of the above embodiment, the control part includes a dial button, a gear and at least one pull rod, the dial button is rotatably arranged on the second folding arm, the gear is fixed in the dial button, one end of the pull rod is provided with a rack part matching the gear and the other end is hinged to the active member.

[0014] As an optional solution of the above embodiment, a center line of the rotating portion is parallel to a center line of the folding portion.

[0015] As an optional solution of the above embodiment, the center line of the rotating part is parallel to the center line of the first folding arm, and the at least two electrode assemblies are distributed around the center line of the first folding arm.

[0016] As an optional solution of the above embodiment, the folding assembly includes a transmission member and a folding knob, one end of the transmission member is fixed to the electrode and the other end of the transmission member is fixed to the folding knob.

[0017] As an optional scheme of the above embodiment, the transmission member adopts a flexible tubular structure, and the transmission member includes a tube body, and a first flexible part is arranged on the tube body. The first flexible part is arranged at the hinge of the first folding arm and the second folding arm, and the first flexible part can bend and transmit torque.

[0018] As an optional solution of the above embodiment, a second flexible portion is further provided on the tube body, the second flexible portion is adjacent to the folding knob, and the second flexible portion can bend and transmit torque.

[0019] As an optional scheme of the above embodiment, the transmission member also includes a flexible insulating layer and an insulating hose, the flexible insulating layer is coated on the outer surface of the tube body, the insulating hose is located inside the tube body, and a first gap exists between the outer surface of the insulating hose and the inner surface of the tube body; the electrode includes an inner tube and an outer tube, the inner tube is located inside the outer tube, and a second gap exists between the outer surface of the inner tube and the inner surface of the outer tube, the tail of the inner tube is connected to the insulating hose and the head of the inner tube is connected to the outer tube, and the first gap and the second gap are connected, so that the transmission member forms a cooling medium circulation channel.

[0020] As an optional scheme for the above embodiment, the foldable hemostatic instrument also includes a revolution assembly, which includes a revolution knob and a rotating seat. The rotating seat rotates around its own center line and is connected to the handle. The center line of the rotating seat does not coincide with the center line of the folding knob. One end of the second folding arm is coaxially fixed to the rotating seat. The revolution knob rotates with the handle and is configured to drive the rotating seat and the second folding arm to rotate synchronously.

[0021] The beneficial effects of the present invention are:

[0022] The foldable hemostatic device provided by the present invention controls the orientation of the electrode assembly through the support assembly, and the electrodes of the electrode assembly can rotate independently, so that the electrodes can change orientation and unfold or fold. When the electrode is folded, the volume is small, and a puncture device (inner diameter 5-15mm) or an endoscope can be easily inserted into the part that needs hemostasis. When the electrode is unfolded, the volume is large, and a large range of powerful and effective hemostasis can be achieved; and because the electrode can rotate independently, multiple electrodes have different arrangements, which are suitable for hemostasis of parts of different shapes; in addition, the electrode changes its direction under the drive of the first folding arm, which can achieve hemostasis of tissues in different parts, and the operation is simpler and faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. As shown in the accompanying drawings, the above and other purposes, features and advantages of the present invention will be clearer. The same reference numerals in all the drawings indicate the same parts. The drawings are not deliberately scaled to the actual size, and the focus is on illustrating the main purpose of the present invention.

[0024] Figure 1 A schematic structural diagram of a foldable hemostatic device provided by an embodiment of the present invention is shown;

[0025] Figure 2 Shows Figure 1 A cross-sectional view of

[0026] Figure 3 A schematic structural diagram of a support assembly is shown;

[0027] Figure 4 Shows Figure 3 Schematic diagram of the bending state;

[0028] Figure 5 A schematic diagram showing the connection relationship between the first folding arm and the second folding arm is shown;

[0029] Figure 6 A schematic diagram showing the coordination relationship between the first folding arm and the execution part is shown;

[0030] Figure 7 Shows Figure 6 Exploded diagram of

[0031] Figure 8 A schematic diagram showing the matching relationship between the active member and the driven member is shown;

[0032] Fig. 9 A schematic diagram of the structure of the active component is shown;

[0033] Fig.10 A schematic structural diagram of a locking member is shown;

[0034] Fig.11 shows a schematic structural diagram of a control unit;

[0035] Fig.12 A schematic diagram showing the coordination relationship between the control part and the second folding arm is shown;

[0036] Fig.13 A schematic diagram of the structure of an electrode assembly is shown;

[0037] Fig.14A schematic diagram showing the matching relationship between the electrode and the fixing member is shown;

[0038] Fig.15 A schematic diagram showing the coordination relationship between the working pole and the loop pole is shown;

[0039] Fig.16 Shows Fig.14 A cross-sectional view of

[0040] Fig.17 A cross-sectional view of an electrode is shown;

[0041] Fig.18 Shows Fig.14 Schematic diagram of the folded state;

[0042] Fig.19 A schematic diagram of one of the deployment modes of the electrode is shown;

[0043] Fig. 20 Another schematic diagram of an electrode deployment method is shown;

[0044] Fig.21 Shows Fig.13 A partial enlarged schematic diagram of

[0045] Fig. 22 A schematic diagram of the structure of the tube body is shown;

[0046] Fig.23 A hierarchical diagram of the transmission components is shown;

[0047] Fig.24 shows a schematic structural diagram of a folding knob;

[0048] Fig.25 A schematic diagram showing the matching relationship between the handle and the revolution assembly is shown;

[0049] Fig.26 Shows Fig.25 A cross-sectional view of

[0050] Fig. 27 Shows Fig.26 A partial enlarged schematic diagram of

[0051] Fig.28 A schematic diagram showing the matching relationship between the rotating seat, the handle, the water circuit separation assembly, etc. is shown;

[0052] Fig.29 A schematic diagram showing the matching relationship of the handle, folding knob, water circuit separation assembly, etc. is shown.

[0053] icon:

[0054] 10-Foldable hemostatic device;

[0055] 11-handle; 12-support assembly; 15-electrode assembly; 18-revolution assembly;

[0056] 120-first folding arm; 121-second folding arm; 122-bending assembly; 123-control unit; 124-executing unit; 125-dial button; 126-gear; 127-pull bar; 128-active member; 129-driven member; 130-locking member; 131-locking groove; 132-active groove; 133-active tooth; 134-fixed tooth; 135-fixing tube; 136-locking tongue; 137-spring; 138-transmission rod; 139-transmission hole; 140-fixed shell; 141-upper shell; 142-lower shell; 143-installation cavity; 144-rack part; 145-fixing member;

[0057] 150-folding assembly; 151-electrode; 152-transmission member; 153-folding knob; 154-rotating part; 155-folding part; 156-connecting part; 157-tube body; 158-first flexible part; 159-second flexible part; 160-flexible insulating layer; 161-insulating hose; 162-inner tube; 163-outer tube; 164-rigid part; 166-water inlet; 167-water outlet; 168-first strip groove;

[0058] 180-revolution knob; 181-rotating seat; 182-half shell; 183-tail cover; 184-water circuit separation assembly; 185-first retaining ring; 186-second retaining ring; 187-rotating drum; 188-end cover; 189-second strip groove. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0060] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0061] Please refer to Figure 1 As shown, an embodiment of the present invention provides a foldable hemostatic instrument 10, which is used for hemostasis in minimally invasive surgery under a microscope.

[0062] Specifically, the foldable hemostatic instrument 10 is mainly composed of a handle 11 , a support assembly 12 , an electrode assembly 15 and a revolution assembly 18 .

[0063] Below, each component is described in detail one by one.

[0064] First, as the basis of the entire structure, the handle 11 mainly supports the support assembly 12, the revolution assembly 18, etc., and is convenient for the staff to hold and operate.

[0065] The style of the handle 11 is not limited. In this embodiment, the handle 11 can adopt but is not limited to the following structures:

[0066] Please combine Figure 2 As shown, the handle 11 has a mounting portion and a hand-holding portion. The mounting portion is hollow inside for accommodating a portion of the component structure, and the hand-holding portion is for a worker to hold.

[0067] In order to facilitate the installation of the support assembly 12, etc., the handle 11 can be divided into two half shells 182, and the two half shells 182 are detachably connected and surround a mounting cavity.

[0068] Secondly, as the main body of the foldable hemostatic instrument 10, the support assembly 12 mainly plays the role of connecting the handle 11 and the electrode assembly 15, and can drive the electrode assembly 15 to reach the designated coagulation area.

[0069] The support assembly 12 may adopt but is not limited to the following structures:

[0070] Please refer to Figure 3 As shown, the support assembly 12 includes a first folding arm 120 , a second folding arm 121 and a bending assembly 122 .

[0071] The first folding arm 120 and the second folding arm 121

[0072] They are hinged to each other, and the hinged connection can be through a pin connection. Specifically, the first folding arm 120 is fixed to the pin and the second folding arm 121 is rotatably matched with the pin, or the second folding arm 121 is fixed to the pin and the first folding arm 120 is rotatably matched with the pin, so that the first folding arm 120 and the second folding arm 121 can rotate relative to each other.

[0073] The swing range of the first folding arm 120 relative to the second folding arm 121 is fan-shaped, and the maximum relative rotation angle range between the first folding arm 120 and the second folding arm 121 can be set as needed. For example, the maximum relative rotation angle between the first folding arm 120 and the second folding arm 121 is 90° on each side. Of course, in other embodiments, the maximum relative rotation angle between the first folding arm 120 and the second folding arm 121 can be smaller or larger, for example, 40°, 60°, 80°, 110°, 130°, etc. on each side, or the maximum relative rotation angle between the first folding arm 120 and the second folding arm 121 is different on the left and right sides.

[0074] The “left and right” in the above description refers to the relative swing direction of the first folding arm 120 relative to the second folding arm 121. Figure 4 For example, the first folding arm 120 is bent upward relative to the second folding arm 121 to swing leftward, and correspondingly, the first folding arm 120 is bent downward relative to the second folding arm 121 to swing rightward.

[0075] The materials and types of the first folding arm 120 and the second folding arm 121 are not limited. In the present embodiment, the first folding arm 120 and the second folding arm 121 both adopt a tubular structure, and the first folding arm 120 and the second folding arm 121 are hollow inside so that other components can be installed inside.

[0076] Of course, in other embodiments, both the first folding arm 120 and the second folding arm 121 may adopt a solid structure, and the shape is not limited to a cylindrical shape.

[0077] In this embodiment, the center line of the first folding arm 120 and the center line of the second folding arm 121 coincide with each other or are located in the same plane.

[0078] The second folding arm 121 is connected to the handle 11 , and the end of the second folding arm 121 can be inserted into the installation cavity of the handle 11 . The first folding arm 120 is located at an end of the second folding arm 121 away from the handle 11 .

[0079] Please refer to Figure 5 As shown, a fixing member 145 is disposed inside one end of the first folding arm 120. The fixing member 145 may be a block structure. In this embodiment, the fixing member 145 is cylindrical and closes the end of the first folding arm 120. The fixing member 145 is provided with a plurality of mounting through holes (please refer to FIG. Fig.16 As shown, in this embodiment, the number of the mounting through holes is four), and the mounting through holes are connected to the interior of the first folding arm 120.

[0080] Of course, the fixing member 145 may also be in a regular shape such as a prism or other irregular shapes, and the fixing member 145 may not be located inside the first folding arm 120. In addition, the fixing member 145 and the first folding arm 120 may be fixedly connected or integrally formed.

[0081] In this embodiment, the center line of the mounting through hole can be parallel to the center line of the first folding arm 120, and the four mounting through holes are evenly distributed around the center line of the first folding arm 120. Of course, in other embodiments, the center line of the mounting through hole can also be skewed or intersecting with the center line of the first folding arm 120.

[0082] When the first folding arm 120 rotates relative to the second folding arm 121, the fixing member 145 can be driven to swing. The bending of the first folding arm 120 and the second folding arm 121 is achieved by controlling the bending assembly 122, that is, when the second folding arm 121 remains stationary, the bending assembly 122 can drive the first folding arm 120 to bend relative to the second folding arm 121. The bending assembly 122 can adopt but is not limited to the following structures:

[0083] The bending assembly 122 includes a control unit 123 and an execution unit 124, wherein the execution unit 124 is used to drive the first folding arm 120 to passively swing relative to the second folding arm 121, that is, when the second folding arm 121 remains stationary, the first folding arm 120 can only swing under the action of the execution unit 124, and the first folding arm 120 cannot swing to drive the execution unit 124 to move. The control unit 123 is used to control the action of the execution unit 124.

[0084] Please refer to Figure 5 As shown, the execution part 124 is arranged at the hinge of the first folding arm 120 and the second folding arm 121 .

[0085] The control unit 123 and the execution unit 124 may have various structures, for example, a motor and gear transmission structure, a gear rack structure, etc.

[0086] Please refer to Figure 6 , Figure 7 As shown, in this embodiment, the execution portion 124 includes an active member 128 , a driven member 129 and a locking member 130 .

[0087] Please refer to Figure 8 As shown, the follower 129 is fixed to the end of the first folding arm 120 , and a plurality of fixed teeth 134 are provided on the follower 129 , and a locking groove 131 is formed between two adjacent fixed teeth 134 , and the number of the locking grooves 131 is more than two.

[0088] The active member 128 and the driven member 129 are arranged correspondingly, and the active member 128 and the driven member 129 can rotate synchronously and can rotate relative to each other within a preset angle threshold range.

[0089] Specifically, in this embodiment, the pin is fixed to the first folding arm 120, the second folding arm 121 is rotatably matched with the pin, the follower 129 is fixed to the pin, and the driving member 128 is rotatably sleeved on the pin.

[0090] Please combine Fig. 9 As shown, the corresponding positions of the active member 128 and the driven member 129 are provided with matching transmission rods 138 and transmission holes 139. In this embodiment, two transmission rods 138 are provided on the active member 128, and two transmission holes 139 are provided on the driven member 129, and the transmission rods 138 are inserted into the transmission holes 139.

[0091] The size of the transmission hole 139 is larger than that of the transmission rod 138, so that the transmission rod 138 has a certain free movement area during the rotation of the active member 128. The transmission rod 138 can be a cylindrical structure, and the transmission hole 139 can be a round hole. The diameter of the transmission hole 139 is larger than the diameter of the transmission rod 138. Of course, the transmission rod 138 and the transmission hole 139 can also adopt other structures, such as the transmission rod 138 adopts a cylindrical structure and the transmission hole 139 adopts an arc-shaped oblong hole, two transmission rods 138 correspond to two notches facing opposite directions, etc.

[0092] The active member 128 moves under the action of the control unit 123 and drives the driven member 129 to rotate. The driven member 129 drives the first folding arm 120 to swing. After the driven member 129 rotates to a specified position, the locking member 130 is inserted into the corresponding locking groove 131.

[0093] The active member 128 may adopt a structure such as a cam, so that the active member 128 can lift the locking member 130 during rotation. The following structure may also be adopted: the active member 128 is provided with multiple movable teeth 133, and a movable groove 132 is formed between two adjacent movable teeth 133.

[0094] Among them, the active member 128 and the locking member 130 cannot self-lock, and the driven member 129 and the locking member 130 can self-lock. Before the active member 128 drives the driven member 129 to rotate, the locking member 130 can be driven to disengage from the locking groove 131, so that the driven member 129 can rotate.

[0095] In other words, the active member 128 and the locking member 130 cannot be self-locking, which means that when the locking member 130 is inserted into the movable groove 132, the active member 128 can push the locking member 130 away when it rotates, that is, the locking member 130 can be pushed up by the tooth surface of the movable tooth 133, so that the locking member 130 can be separated from the movable groove 132. In order to achieve this function, the tooth profile of the movable tooth 133 can be in the shape of an arc. Of course, in other embodiments, the movable tooth 133 can also adopt a tooth surface with a smaller slope.

[0096] The follower 129 and the locking member 130 can be self-locking, which means that when the locking member 130 is inserted into the locking groove 131, without the influence of the active member 128, the follower 129 cannot push the locking member 130 open, that is, the locking member 130 cannot be lifted up by the tooth surface of the fixed tooth 134, and the locking member 130 is always inserted in the fixed groove so that the follower 129 cannot rotate.

[0097] In order to achieve the above effect, the locking member 130 may adopt but is not limited to the following structure: Fig.10As shown, the locking member 130 is adjacent to the active member 128 , and the locking member 130 includes a fixing tube 135 , a locking tongue 136 and a spring 137 .

[0098] The fixing tube 135 is disposed inside the second folding arm 121 , and the locking tongue 136 is slidably disposed inside the fixing tube 135 . The locking tongue 136 extends from one end of the fixing tube 135 , and the thickness of the end of the locking tongue 136 gradually decreases.

[0099] The spring 137 is located in the fixing tube 135 and makes the locking tongue 136 have a tendency to move toward the follower 129 .

[0100] The execution unit 124 is driven by the control unit 123. In this embodiment, please refer to Fig.11 , Fig.12 As shown, the control unit 123 includes a fixed shell 140 , a dial button 125 , a gear 126 and a pull bar 127 .

[0101] Specifically, the fixed shell 140 is sleeved on the second folding arm 121, and the dial button 125 is rotatably set on the fixed shell 140. Scales and pointers can be set at corresponding positions of the dial button 125 and the fixed shell 140 to facilitate the staff to accurately know the bending angle of the first folding arm 120.

[0102] The gear 126 and the dial button 125 are coaxially fixed, and the dial button 125 can drive the gear 126 to rotate.

[0103] One end of the pull rod 127 is provided with a rack portion 144 matching the gear 126 and the other end is hinged to the driving member 128 .

[0104] When the dial button 125 is turned, the dial button 125 drives the gear 126 to rotate, the gear 126 drives the rack portion 144 and the pull bar 127 to move, and the pull bar 127 drives the active member 128 to rotate.

[0105] The pull rod 127 can also be provided as two, and the same end of the two pull rods 127 is relatively arranged on the active member 128, and the other end is also meshed with the gear 126 through the respective rack parts 144.

[0106] When the dial button 125 is turned, the dial button 125 drives the gear 126 to rotate, and the gear 126 drives the rack portion 144 and the pull rod 127 to move. The two pull rods 127 move in opposite directions, thereby driving the active member 128 to rotate.

[0107] The fixed shell 140 is divided into an upper shell 141 and a lower shell 142 which are detachably connected. The upper shell 141 and the lower shell 142 are detachable. The upper shell 141 is provided with an installation cavity 143 for installing the dial button 125 and the gear 126 .

[0108] The structure of the fixed shell 140 makes it easier to assemble and disassemble the control unit 123 .

[0109] The support assembly 12 is mainly used to fix and drive the electrode assembly 15, and the electrode assembly 15 mainly plays a role in stopping bleeding. The electrode assembly 15 can adopt but is not limited to the following structures:

[0110] Please refer to Fig.13 As shown, the electrode assembly 15 includes a folding assembly 150 and a plurality of electrodes 151. In one embodiment, the plurality of electrodes 151 are all monopolar electrodes, that is, each electrode is a working electrode. In this case, a negative electrode plate is required in actual operation. In this embodiment, the number of electrodes 151 is four. In other embodiments, the number of electrodes 151 can also be two, three, five, etc. After repeated experiments by researchers, it is found that due to the limitations of endoscopic surgical operations, when the number of electrodes 151 is four, the efficiency is high and the hemostatic effect is good.

[0111] Please refer to Fig.14 As shown, in this embodiment, the electrodes 151 are connected to the fixing member 145, and the four electrodes 151 are distributed in a rectangular shape.

[0112] Please refer to Fig.15 As shown, in another preferred embodiment, the electrode 151 is divided into a working electrode and a loop electrode. When this method is adopted, a working electrode and a loop electrode constitute a group of electrodes 151. At least one group of electrodes 151 is provided, and the commonly used number of groups is 1 group, 2 groups or 3 groups. Whether to set it as a bending structure is selected according to the caliber size of the endoscope, that is, when the number of electrode 151 groups is 1 group, it is usually not necessary to set the electrode 151 as a bending structure. Only when the applicable puncture device (inner diameter 5-15mm) or the endoscope has a small caliber, the electrode 151 with a bending structure is needed. When the electrodes 151 are arranged in a row, the distal end spacing between the working electrode and the loop electrode of the same group is 5-12mm, the diameter of each electrode 151 is 1-3mm, and the length of each electrode 151 exposed from the fixing member 145 or the first folding arm 120 is 3-10cm. The "distal end" here refers to the end closer to the site of action during endoscopic surgery.

[0113] When multiple groups of electrodes 151 are provided, the working electrodes and the loop electrodes are alternately distributed, and the electrodes 151 are insulated from each other. The alternating distribution of the working electrodes and the loop electrodes can connect the coagulation areas generated between the electrodes 151 to each other, thereby generating a larger coagulation area.

[0114] Of course, in another inferior embodiment, the "working pole-loop pole-loop pole-working pole" or "loop pole-working pole-working pole-loop pole" method can also be adopted. The coagulation area generated by this method is disconnected, and no good coagulation area is formed between different groups.

[0115] Under the action of the radio frequency host, the high-frequency current is turned on and off by using a foot controller or manually controlling the high-frequency current, and the high-frequency current flows between the working electrode and the loop electrode. Since the tissue has a certain impedance, heat is generated when the high-frequency current flows through the tissue, and this heat causes the tissue spiral protein to shrink and dehydrate, closing the blood vessels, thereby achieving the hemostasis function. During hemostasis, the electrode 151 itself does not generate heat, and the heat for hemostasis comes from the heat generated by "ohmic heating" when the current flows through the tissue.

[0116] Please refer to Fig.16 As shown, the electrode 151 includes a rotating portion 154, a connecting portion 156 and a folding portion 155 which are connected in sequence.

[0117] The rotating part 154 is inserted into the mounting through hole of the fixed block, and the rotating part 154 can rotate around its own center line. It should be noted that the rotating part 154 can only rotate and cannot slide along its own center line.

[0118] The folding portion 155 is connected to the rotating portion 154 through the connecting portion 156. When the rotating portion 154 rotates, the folding portion 155 can be driven to rotate around the center line of the rotating portion 154. When the electrodes 151 are arranged in a row, the distal end spacing between the folding portions 155 of the same group of working electrodes and loop electrodes is 5-12 mm.

[0119] Among them, the center line of the folding part 155 does not coincide with the center line of the rotating part 154. The center line of the folding part 155 and the center line of the rotating part 154 can be skewed or intersecting. In this embodiment, the center line of the folding part 155 is parallel to the center line of the rotating part 154.

[0120] The connecting portion 156 is used to connect the rotating portion 154 and the folding portion 155 .

[0121] The shape of the connection portion 156 is not limited. For example, the connection portion 156 may be a curved structure, a straight structure, etc. In the present embodiment, the connection portion 156 may be a straight structure.

[0122] The angle between the center line of the connecting portion 156 and the center line of the rotating portion 154, and the angle between the center line of the connecting portion 156 and the center line of the folding portion 155 are not limited. For example, the connecting portion 156 is perpendicular to the rotating portion 154 and the folding portion 155, respectively, and the angle between the center line of the connecting portion 156 and the center line of the rotating portion 154, and the angle between the center line of the connecting portion 156 and the center line of the folding portion 155 are obtuse angles.

[0123] In this embodiment, the angle between the center line of the connecting portion 156 and the center line of the rotating portion 154 is an obtuse angle, and the angle between the center line of the connecting portion 156 and the center line of the folding portion 155 is an obtuse angle. The angle range of the obtuse angle can be controlled between 120°-150°, for example, 120°, 135°, 150°, etc.

[0124] This angle range ensures that different electrodes 151 will not interfere with each other when rotating individually, so that the electrode 151 can achieve 360° rotation around the center line of the rotating part 154 .

[0125] When the electrode 151 rotates around the center line of the rotating part 154, the electrode 151 can be independently unfolded or folded, and the rotation of different electrodes 151 does not interfere with each other, that is, when one electrode 151 rotates, whether the other electrodes 151 rotate, the rotation direction and rotation angle are not affected.

[0126] It should be noted that the unfolding or folding of the electrode 151 refers to the distance between the center line of the folding portion 155 and the center line of the fixing member 145 (in this embodiment, it can be considered as the center line of the first folding arm 120) increasing or decreasing with the rotation of the electrode 151. The limit state of the unfolding of the electrode 151 is that the distance between the center line of the folding portion 155 and the center line of the fixing block is the maximum, and the limit state of the folding of the electrode 151 is that the distance between the center line of the folding portion 155 and the center line of the fixing block is the minimum.

[0127] There is a smooth transition between the connecting portion 156 and the rotating portion 154 , and between the connecting portion 156 and the folding portion 155 .

[0128] In addition, in order to facilitate endoscopic surgery as much as possible, it is necessary to control the four electrodes 151 not to exceed the diameter range of the first folding arm 120 or the fixing member 145 in the folded state.

[0129] The electrode 151 is curved as a whole and hollow inside. For details, please refer to Fig.17 As shown, the electrode 151 includes an inner tube 162 and an outer tube 163 .

[0130] The inner tube 162 and the outer tube 163 can both be made of metal materials. The single electrode 151 is first assembled with the inner tube 162 and the outer tube 163, then welded and fixed, and finally bent.

[0131] The inner tube 162 is located inside the outer tube 163 , wherein there is a certain distance between the head of the inner tube 162 and the head of the outer tube 163 , and a second gap is formed between the outer surface of the inner tube 162 and the inner surface of the outer tube 163 .

[0132] The tail of the inner tube 162 is provided with a water inlet 166 and the head is connected to the outer tube 163 . The head of the outer tube 163 is closed and the tail is provided with a water outlet 167 , so that the inner tube 162 and the outer tube 163 form a first cooling medium circulation channel.

[0133] It should be noted that the head and tail of the outer tube 163 and the inner tube 162 are relative. The tail refers to the end of the electrode 151 close to the handle 11, that is, the end away from the coagulation area during operation; the head refers to the end of the electrode 151 away from the handle 11, that is, the end inserted into the coagulation area during operation. Fig.17 In terms of the orientation in the figure, the left side is the tail of the outer tube 163 and the inner tube 162, and the right side is the head of the outer tube 163 and the inner tube 162.

[0134] The tail of the outer tube 163 is sealed to the outer surface of the inner tube 162 , and the sealing method is not limited. For example, the tail of the outer tube 163 and the inner tube 162 can be sealed by welding.

[0135] There are multiple water outlets 167 which are evenly distributed along the circumference of the outer tube 163 .

[0136] The flow pattern of the cooling liquid inside the electrode 151 is as follows: the cooling liquid enters the inner tube 162 from the tail end of the inner tube 162 , flows out from the head end of the inner tube 162 and enters the head end of the outer tube 163 , then enters the tail end of the outer tube 163 , and finally flows along the second gap between the inner tube 162 and the outer tube 163 and flows out from the water outlet 167 .

[0137] The current density around electrode 151 is much greater than the density at a distance, which causes the tissue around electrode 151 to be more easily dehydrated and dried up. If the tissue around electrode 151 dehydrates and dries up too early, the current cannot be transmitted to tissues farther away, and bleeding cannot be stopped in the distant tissues, and the range of hemostasis is greatly reduced.

[0138] Each electrode 151 of the hemostatic device has an internal liquid circulation function; when the water inlet pipe is connected to the cooling liquid (which can be but is not limited to physiological saline), the water outlet 167 is connected to the suction device, and the cooling liquid can flow through the entire electrode 151, thereby taking away the heat of the electrode 151; the temperature of the electrode 151 will not be too high (maintained at about 25°C), so the tissue around the electrode 151 will not dry out prematurely, and the "knife sticking phenomenon" is not likely to occur. At this time, the current can be transmitted to cause distant tissues to generate heat, dehydrate, and stop bleeding.

[0139] In addition, in other embodiments, the water outlet 167 can also be set at other positions, for example, the water outlet 167 is set at the middle of the rotating part 154 or the connecting part 156 or the intersection of the folding part 155 and the connecting part 156. However, in this case, the water outlet 167 is not convenient for connecting to the suction device, and the cooling liquid can only flow out from the water outlet 167 and act on the part to be treated, and a separate suction device must be used to suck the waste water out of the body.

[0140] In order to facilitate the insertion of the electrode 151 into the tissue, the diameter of the head of the outer tube 163 is gradually reduced to form a needle tip shape.

[0141] In addition, a scale may be provided on the outer surface of the electrode 151 , and the scale may allow the staff to know the depth to which the electrode 151 is inserted into the tissue.

[0142] Please refer to Fig.18 As shown, this embodiment uses four electrodes 151. After the electrodes 151 are completely folded, the folded portions 155 of the four electrodes 151 are gathered together and are close to the center line of the fixing member 145. The four electrodes 151 do not exceed the diameter range of the first folding arm 120.

[0143] Please refer to Fig.19 , Fig. 20 As shown, as the electrodes 151 rotate, the folded portions 155 of the four electrodes 151 can be arranged in a variety of ways, such as a straight line, an arc, a rectangle, etc.

[0144] The rotation of the electrode 151 is achieved through the folding assembly 150, and the folding assembly 150 is used to drive the electrode 151 of the electrode assembly 15 to rotate, so that the electrode assembly 15 is folded or unfolded.

[0145] The folding assembly 150 may adopt but is not limited to the following structures:

[0146] Please refer to Figure 2 , 13 As shown in FIGS. 15 and 21 , the folding assembly 150 includes a folding knob 153 and a transmission member 152. The folding knob 153 is rotatably connected to the handle 11, and one end of the transmission member 152 is connected to the rotating portion 154 and the other end is connected to the folding knob 153. When the folding knob 153 rotates, the transmission member 152 can drive the electrode 151 to rotate.

[0147] Since the first folding arm 120 and the second folding arm 121 can be bent, in order to adapt to this structure, in this embodiment, the transmission member 152 adopts a flexible tubular structure. For details, please refer to Fig. 22 As shown, the transmission member 152 includes a tube body 157 , which may be made of a metal material. The tube body 157 includes a rigid portion 164 and a first flexible portion 158 .

[0148] The rigid part 164 is not deformable, and the first flexible part 158 ​​is disposed at the hinge of the first folding arm 120 and the second folding arm 121. The first flexible part 158 ​​can bend and transmit torque. When the first folding arm 120 and the second folding arm 121 bend, the first flexible part 158 ​​will follow the bending and will not affect the torque transmission of the folding assembly 150.

[0149] In addition, since the diameters of the first folding arm 120 and the second folding arm 121 are relatively small, and the transmission member 152 is located inside the two, the number of the transmission members 152 is relatively large, resulting in a relatively small spacing between the transmission members 152, which is not easy to control. In order to improve this problem, in this embodiment, a second flexible portion 159 is further provided on the tube body 157, and the second flexible portion 159 is adjacent to the folding knob 153. The second flexible portion 159 can bend and transmit torque.

[0150] The second flexible portion 159 is located outside the second folding arm 121 . The second flexible portion 159 allows the distance between the transmission members 152 to be increased as needed to prevent mutual interference.

[0151] The tube body 157 is a circular metal tube, and the first flexible portion 158 and the second flexible portion 159 are made into a spiral shape by spiral cutting.

[0152] Of course, in other embodiments, the first flexible portion 158 and the second flexible portion 159 may also adopt other structures.

[0153] In addition, please refer to Fig.23 As shown, the transmission member 152 further includes a flexible insulating layer 160 and an insulating hose 161 .

[0154] The flexible insulating layer 160 is wrapped around the outer surface of the tube body 157, and the insulating hose 161 is located inside the tube body 157. There is a first gap between the outer surface of the insulating hose 161 and the inner surface of the tube body 157. When the water outlet 166 is set at the tail of the outer tube 163, the flexible insulating layer 160 and the insulating hose 161 form a second cooling medium circulation channel.

[0155] The tail of the inner tube 162 is connected to the insulating hose 161, and the first gap and the second gap are connected through the water outlet 167, that is, the first cooling medium circulation channel and the second cooling medium circulation channel are connected to form a complete cooling medium circulation channel.

[0156] Please refer to Fig.24 As shown, the outer surface of the folding knob 153 is provided with a plurality of first strip grooves 168 for the convenience of the staff to screw. The plurality of first strip grooves 168 are evenly distributed along the circumference of the folding knob 153 , and the strip grooves extend along the axial direction of the folding knob 153 .

[0157] The folding assembly 150 enables the electrode assembly 15 to rotate, but in some specific environments, it cannot meet the needs well. For example, when hemostasis is performed at different locations and the arrangement of the electrodes 151 needs to be the same, it can only be achieved by rotating the handle 11. The rotation of the handle 11 will affect the operation of the staff. In this case, the revolution assembly 18 is required to realize the transfer of the electrode assembly 15. The revolution assembly 18 can adopt but is not limited to the following solutions:

[0158] The revolution assembly 18 is used to drive the support assembly 12 and the electrode assembly 15 to rotate as a whole relative to the handle 11 .

[0159] Please refer to Fig.25 , Fig.26 As shown, the revolution assembly 18 includes a rotation seat 181 and a revolution knob 180 .

[0160] The rotating seat 181 is located in the installation cavity 143. The rotating seat 181 can rotate around its own center line. The center line of the rotating seat 181 does not coincide with the center line of the folding knob 153. One end of the second folding arm 121 is coaxially fixed to the rotating seat 181. In this embodiment, the center line of the second folding arm 121 coincides with the center line of the rotating seat 181, and the second folding arm 121 is inserted into the rotating seat 181.

[0161] The revolution knob 180 is rotationally matched with the handle 11 , and the revolution knob 180 can drive the rotating seat 181 and the second folding arm 121 to rotate synchronously.

[0162] The folding knob 153 is connected to the rotating seat 181 and can rotate around its own center line. The center line of the folding knob 153 does not coincide with the center line of the rotating seat 181. In this embodiment, the center line of the rotating knob is parallel to the center line of the rotating seat 181.

[0163] When the handle 11 remains stationary, the rotating seat 181 can only rotate around its own center line. During the rotation process, the rotating seat 181 can drive the folding knob 153, the second folding arm 121, etc. to rotate, that is, the folding knob 153, the second folding arm 121, etc. revolve, and the folding knob 153 can also rotate around its own center line, that is, the folding knob 153, the transmission part 152, the electrode 151, etc. rotate.

[0164] The revolution and rotation of the folding knob 153 and the electrode 151 cooperate with each other, which can not only realize the independent rotation of the electrode 151, but also change the orientation of the first folding arm 120 and the electrode 151 after bending.

[0165] The connection method between the rotating seat 181 and the handle 11 is not limited. In this embodiment, please refer to Fig. 27As shown, a first baffle ring 185 is provided on the outer surface of the rotating seat 181, and the first baffle ring 185 is arranged along the circumference of the rotating seat 181. A second baffle ring 186 matching the first baffle ring 185 is provided inside the handle 11, and the first baffle ring 185 and the second baffle ring 186 are clamped and fixed to each other.

[0166] The rotating seat 181 can also be divided into a rotating drum 187 and an end cover 188. One end of the rotating drum 187 is a closed end and the other end is an open end. The support extends into the rotating drum 187 from the closed end, and the end cover 188 is covered on the open end.

[0167] The outer surface of the revolution knob 180 is provided with a plurality of second strip-shaped grooves 189 , and the second strip-shaped grooves 189 extend along the axial direction of the revolution knob 180 .

[0168] In addition, please refer to Fig.28 , 29 As shown, the foldable hemostatic instrument 10 may further include a tail cover 183 , and one end of the folding knob 153 is connected to the tail cover 183 .

[0169] A water circuit separation component 184 is disposed in the tail cover 183 , and the transmission member 152 is connected to the inside of the water circuit separation component 184 .

[0170] The water circuit separation component 184 is used to separate the water circuit from the circuit. In one embodiment, the water circuit separation method can be as follows:

[0171] The water circuit separation component 184 is a water collection tank, which transports the heated and refluxed cooling liquid to the water collection tank through the cooling medium circulation channel, and the water collection tank is then connected to the suction equipment through the suction pipeline; and the end of the tube body 157 close to the water collection tank is electrically connected to the main unit through a welded and sealed insulated cable.

[0172] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A foldable hemostatic device, characterized in that: The foldable hemostatic device (10) comprises a handle (11), a support assembly (12) and an electrode assembly (15); The support assembly (12) comprises a first folding arm (120), a second folding arm (121) and a bending assembly (122); the second folding arm (121) is connected to the handle (11); the first folding arm (120) and the second folding arm (121) are hinged; and the bending assembly (122) is configured to control the first folding arm (120) to bend relative to the second folding arm (121); The electrode assembly (15) comprises a folding assembly (150) and at least two electrodes (151); the electrode (151) comprises a rotating portion (154), a connecting portion (156) and a folding portion (155) connected in sequence; the center line of the folding portion (155) does not coincide with the center line of the rotating portion (154); the rotating portion (154) is arranged at the end of the first folding arm (120) and is driven to rotate by the folding assembly (150), so that the folding portion (155) rotates around the center line of the rotating portion (154), so as to realize independent unfolding or folding of the electrode (151); A fixing part (145) is arranged inside one end of the first folding arm (120); the unfolding or folding of the electrode (151) means that the distance between the center line of the folding part (155) and the center line of the fixing part (145) increases or decreases as the electrode (151) rotates; the limit state of the unfolding of the electrode (151) is that the distance between the center line of the folding part (155) and the center line of the fixing part (145) is the maximum, and the limit state of the folding of the electrode (151) is that the distance between the center line of the folding part (155) and the center line of the fixing part (145) is the minimum; The folding assembly (150) comprises a transmission member (152) and a folding knob (153); one end of the transmission member (152) is fixed to the electrode (151) and the other end is fixed to the folding knob (153); the transmission member (152) adopts a flexible tubular structure, the transmission member (152) comprises a tube body (157), a first flexible portion (158) is provided on the tube body (157), the first flexible portion (158) is provided at the hinge of the first folding arm (120) and the second folding arm (121), and the first flexible portion (158) is capable of bending and transmitting torque.

2. The foldable hemostatic device according to claim 1, characterized in that: The bending assembly (122) comprises a control unit (123) and an execution unit (124); the execution unit (124) is arranged at a hinge between the first folding arm (120) and the second folding arm (121) and is driven by the control unit (123); the execution unit (124) is configured to drive the first folding arm (120) to passively swing relative to the second folding arm (121).

3. The foldable hemostatic device according to claim 2, characterized in that: The execution part (124) comprises an active member (128), a driven member (129) and a locking member (130); the driven member (129) is fixed to the first folding arm (120) and has at least two locking grooves (131); the control part (123) drives the driven member (129) to rotate via the active member (128); the locking member (130) is fixed to the second folding arm (121); the locking member (130) is selectively inserted into one of the locking grooves (131) and can be disengaged from the locking groove (131) under the action of the active member (128).

4. The foldable hemostatic device according to claim 3, characterized in that: The control part (123) comprises a dial button (125), a gear (126) and at least one pull rod (127); the dial button (125) is rotatably arranged on the second folding arm (121); the gear (126) is fixed in the dial button (125); one end of the pull rod (127) is provided with a rack part (144) matching the gear (126) and the other end is hinged to the active member (128).

5. The foldable hemostatic device according to claim 1, characterized in that: The center line of the rotating portion (154) and the center line of the folding portion (155) are parallel.

6. The foldable hemostatic device according to claim 5, characterized in that: The center line of the rotating portion (154) is parallel to the center line of the first folding arm (120), and the at least two electrode assemblies (15) are distributed around the center line of the first folding arm (120).

7. The foldable hemostatic device according to claim 1, characterized in that: The tube body (157) is also provided with a second flexible portion (159), the second flexible portion (159) being adjacent to the folding knob (153), and the second flexible portion (159) being capable of bending and transmitting torque.

8. The foldable hemostatic device according to claim 1, characterized in that: The transmission member (152) further comprises a flexible insulating layer (160) and an insulating hose (161), wherein the flexible insulating layer (160) is coated on the outer surface of the tube body (157), the insulating hose (161) is located inside the tube body (157), and a first gap exists between the outer surface of the insulating hose (161) and the inner surface of the tube body (157); the electrode (151) comprises an inner tube (162) and an outer tube (163), wherein the inner tube (162) is located inside the outer tube (163), and a second gap exists between the outer surface of the inner tube (162) and the inner surface of the outer tube (163), the tail of the inner tube (162) is connected to the insulating hose (161) and the head of the inner tube (163), and the first gap is connected to the second gap, so that the transmission member (152) forms a cooling medium circulation channel.

9. The foldable hemostatic device according to claim 1, characterized in that: The foldable hemostatic instrument (10) further comprises a revolution assembly (18), wherein the revolution assembly (18) comprises a revolution knob (180) and a rotating seat (181), wherein the rotating seat (181) is connected to the handle (11) by rotating around its own center line, wherein the center line of the rotating seat (181) does not coincide with the center line of the folding knob (153), wherein one end of the second folding arm (121) is coaxially fixed to the rotating seat (181), wherein the revolution knob (180) is rotationally matched with the handle (11), and wherein the revolution knob (180) is configured to drive the rotating seat (181) and the second folding arm (121) to rotate synchronously.

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