CN114869356A

CN114869356A - Disposable collecting net basket

Info

Publication number: CN114869356A
Application number: CN202210486391.7A
Authority: CN
Inventors: 杨德桂; 何敏; 方素; 杨国熙; 宋振坤
Original assignee: Shenzhen Peoples Hospital
Current assignee: Shenzhen Peoples Hospital
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-08-09

Abstract

The invention discloses a disposable collecting net basket. Including basket body and basket sheath pipe, the basket body is acceptd in the terminal department of basket sheath pipe, the basket body includes the basket, activity latch fitting and basket net, the basket forms the first sub-basket of size adjustable under the restraint of activity latch fitting, the sub-basket of second, the basket net is located on the sub-basket of second, the activity latch fitting is the edge pipe, the terminal inner chamber shape and the adaptation of activity latch fitting shape of basket sheath pipe, basket sheath intraductal being provided with is used for the promotion pipe that touches movable latch fitting in top, first sub-basket is connected with draws the lead screw, it can take place the easy-to-break portion that cuts to draw between lead screw and the first sub-basket under the torsion effect to be provided with. The invention can avoid the assembly of the preoperative basket and the separation from the handle, is convenient for batch pulling out at the later stage, and has the integral structure to effectively shorten the operation time.

Description

Disposable collecting net basket

Technical Field

The invention relates to the technical field of medical instruments, in particular to a disposable collecting basket.

Background

As is well known, as endoscopic techniques have developed, the number of procedures using endoscopes (also known as endoscopes) has increased. Especially, when hemostasis is performed under an endoscope, a large amount of blood clots are often encountered in the gastrointestinal cavity, and the occurrence of the blood clots hinders accurate positioning of a blood focus (bleeding point), so that the operation time is prolonged, and the operation difficulty is increased. The maximum diameter of a biopsy hole channel of a gastrointestinal endoscope (one type of endoscope) is 2.8mm, if a blood clot is large and has crisp texture, the blood clot cannot pass through the biopsy hole channel, the blood clot blocks a biopsy hole and shields the visual field in the blood suction process, an operator must repeatedly enter and exit the endoscope to clean the blood clot, and the blood clot cannot be pulled out smoothly at one time due to the crisp texture of the blood clot. The blood clots that cannot be pulled out can block the operation field (the field of view of the endoscope) or clear the blood clots for a long time, which can result in the failure of hemostasis.

When adenomas in the gastrointestinal tract grow larger, the quality of the adenomas grows crisply, when the tumor is cut and excised by the PEMR (multiple endoscopic submucosal dissection), tumor fragments cannot pass through biopsy pores, and the fragments block biopsy pores and block the visual field in the process of liquid suction, an operator must repeatedly go in and out of a gastrointestinal endoscope to clean the fragments, and the fragments are fragile and cannot be smoothly pulled out (particularly when passing through anal sphincter). Because the tumor fragments can shield the operative field or clear the tumor fragments for a long time, the hemostasis in the operation can not be completed in time, and the operation fails, therefore, a medical basket for picking up foreign matters (blood clots and tumor fragments) is extended.

Gastrointestinal adenomas are often multiple, and after completion of surgery, tumors need to be brought out of the body completely, and through postoperative pathology, whether complete resection is determined. When multiple tumors are excised, only 1 tumor can be brought out each time the patient enters the human body, and the operation time can be greatly prolonged. And when the tumor volume is small, the tumor is easy to hide in the plica of the colon after being cut off, if a medical basket is used for packing the tumor, the tumor is taken out of the body together after all operations are finished, so that the operation time can be greatly shortened, and the anesthesia risk of a patient during the operation can be reduced.

At present, the current basket mostly relies on nylon rope basket, then passes through the endoscope propelling movement to after the foreign matter is established to the cover, because of basket and the unable separation of handle, need be along with the endoscope together drags out the human body, also can only drag out one in proper order, to above-mentioned a plurality of foreign matters, it is hard consuming time, if pathological change is on the right side colon in addition, the scope all takes more than 10 minutes to get into at every turn. In the limited space of the intestinal cavity, the bleeding can fill the intestinal cavity, and the surgical field can not be provided enough for completing the operation in a short time. Moreover, when the basket is assembled with the hook lock, namely when the basket is sent into a biopsy hole of an endoscope, the basket needs to be assembled before operation and needs to be properly connected in series, but the connecting structure between the basket and the hook lock is very fine, so that a lot of time is consumed in assembly, and a new surgeon and an assistant thereof have the possibility of releasing the basket by mistake, so that the defect that the time is a life operation is large.

Disclosure of Invention

In view of the above-mentioned shortcomings in the prior art, the present invention aims to provide a disposable collecting basket which can eliminate the basket assembly before operation and can be separated from the handle.

In order to achieve the purpose, the invention adopts the following technical scheme:

a disposable collecting net basket comprises a net basket body and a net basket sheath tube, wherein the net basket body is contained at the tail end of the net basket sheath tube, the net basket body comprises a basket, a movable locking piece and a net, the basket forms a first sub basket and a second sub basket with adjustable sizes under the constraint of the movable locking piece, the net is arranged on the second sub basket, a pushing tube used for pushing and contacting the movable locking piece is arranged in the net basket sheath tube, the movable locking piece and the pushing tube are mutually identical and are respectively a prismatic tube, the shape of an inner cavity at the tail end of the net basket sheath tube is matched with the shape of the movable locking piece and the pushing tube, the first sub basket is connected with a traction lead screw, a part which can be easily broken under the action of torsion is arranged between the traction lead screw and the first sub basket, the traction lead screw is positioned in a hollow cavity of the pushing tube, and when the pushing tube pushes the net basket sheath tube, the pushing pipe is supported against the inner wall of the basket sheath pipe by the edge.

Preferably, the traction screw is formed by winding at least two wires around each other to form a shaft.

Preferably, the frangible portion is medical 304 stainless steel that breaks when subjected to a tangential rotational shear of greater than or equal to 1 newton.

Preferably, the basket is made of flexible memory metal and the surface coating is red and appears dark green under NBI for easy identification, and the net is made of nylon rope.

Preferably, the cross-section of activity latch fitting and impulse pipe is the hexagon, just the activity latch fitting transversely is provided with two perforation, and relies on the perforation, the activity latch fitting is worn to locate on the basket.

Preferably, the handle part comprises a fixed handle, a movable handle and a pull ring, the fixed handle and the movable handle are both provided with ring openings, the fixed handle is fixedly connected with the basket sheath tube, the pushing tube extends out of the fixed handle and is fixedly connected with the movable handle, the pulling screw rod penetrates through the movable handle and is connected with the pull ring, and the pushing tube and the pulling screw rod can achieve the pushing and pulling effect under the action of manpower on the movable handle and the pull ring, and can rotate relative to the movable handle.

Preferably, a groove is formed in the movable handle, the shape of the groove is matched with that of the pull ring, and the pull ring is embedded into the groove, so that the pull spring cannot rotate.

Preferably, the fixed handle and the movable handle are provided with marks in different colors, and the movable lock is yellow, so that the movable lock is orange under NBI (negative bias potential indicator), and is convenient to distinguish.

Due to the adoption of the scheme, the invention has the following beneficial effects:

1. according to the mesh basket provided by the invention, on the premise of packaging foreign matters (such as blood clots, tumor and other fragile objects, or biological tissues with tumor and blood clots), the integral structure is directly connected into a whole, the mesh basket does not need to be assembled before an operation, can be directly used after being opened, and can effectively save the time of preparation work before the operation;

2. in the design of easy-to-break portion and activity latch fitting design into the edge pipe, make the basket body alright separate under the exogenic rotation, thereby can be to a plurality of foreign matters, pack one by one, and after the packing is accomplished, can make the endoscope once can take out a plurality of foreign matters (blood clot, fragile thing such as tumour, or have the tumour simultaneously, the biological tissue of blood clot etc.), the flexible operation is convenient, avoid passing in and out patient's health repeatedly, thereby patient's misery has been alleviateed, the scope operation success rate is improved

3. The movable locking piece forms the basket into a first sub-basket and a second sub-basket, so that the sealing of the net basket is met, the first sub-basket can be used as a rope hanging opening, the convenience is brought to follow-up, and a plurality of well-packaged net baskets are dragged out together.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural view of the second sub-basket push-out basket sheath according to the embodiment of the present invention.

Fig. 3 is a schematic structural view illustrating the second sub-basket collected after catching foreign matters according to the embodiment of the present invention.

Fig. 4 is a schematic structural view of the basket body of the embodiment of the present invention after being detached.

Figure 5 is a cross-sectional view of a movable lock of an embodiment of the present invention.

Fig. 6 is a schematic structural view of a handle portion of an embodiment of the present invention.

FIG. 7 is a schematic structural view of a breakable portion according to an embodiment of the present invention

Fig. 8 is a schematic view showing a process of removing a plurality of polyps without repeatedly entering and exiting a human body using the basket according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 8, the disposable collecting basket provided by this embodiment includes a basket body 1 and a basket sheath tube 2, the basket body 1 is accommodated at the end of the basket sheath tube 2, the basket body 1 includes a basket 11, a movable locking piece 12 and a basket net 13, the basket 11 is green in design, the basket 11 forms a first sub-basket 101 and a second sub-basket 102 with adjustable sizes under the constraint of the movable locking piece 12, the basket net 13 is disposed on the second sub-basket 102, a pushing tube 21 for contacting the movable locking piece 12 is disposed in the basket sheath tube 2, the movable locking piece 12 and the pushing tube 21 are identical in shape and are all prism tubes, the end of the basket sheath tube 2 has an inner cavity shape matched with the movable locking piece 12 and the pushing tube 21, the first sub-basket 101 is connected with a traction lead screw 22, a fracture portion 24 which can be fractured under the action of torsion is disposed between the traction lead screw 22 and the first sub-basket 101, the traction screw rod 22 is located in a hollow cavity of the pushing pipe 21, wherein when the pushing pipe 21 is pushed by the basket sheath pipe 2, the pushing pipe 21 touches the inner wall of the basket sheath pipe 2 by the edge top, so that the friction force between the pushing pipe and the inner wall of the basket sheath pipe 2 can be effectively retrieved, and the pushing pipe 21 can move conveniently.

The embodiment mainly depends on the activity of the basket body 1 in the basket sheath 2 to complete the capture and packing of the foreign bodies 100.

For the sake of more convenient understanding of those skilled in the art, the following description of the working operation is made:

that is, when not in use, the basket body 1 is completely accommodated at the end of the basket sheath tube 2, and then the basket body 1 is pushed by acting force on the traction lead screw 22 and the push tube 21, so that the second sub-basket 102 of the basket body 1 is placed outside, wherein the basket 11 is made of flexible memory metal, the basket net 13 is made of nylon rope, after the second sub-basket 102 pushes out the basket sheath tube 2, the second sub-basket 102 is automatically unfolded, the size of the port is determined according to the pushing-out degree of the second sub-basket 102, and the pushing-out degree is also determined according to the size of the pathological change body (foreign matter), when the second sub-basket 102 is sleeved on the pathological change body by the frame opening, the push tube 21 is kept still, then the traction lead screw 22 is pulled, so that the basket 11 moves relative to the movable locking piece 12, the first sub-basket 101 is gradually enlarged, and the second sub-basket 102 is gradually closed, until the second sub-basket 102 is brought into a closed state. At this moment, just need rotate and draw lead screw 22, and activity latch fitting 12 is the arris limit pipe again, makes and can reach rotatory limited between the relative basket sheath pipe 2 of activity latch fitting 12, can not follow and draw lead screw 22 and rotate, and easy-to-break portion 24 just can split under the effect of torsion, just so reaches the effect of carrying out the separation to the basket body 1 that packs. Wherein, when satisfying that the easy-to-break portion carries out cracked power and equals or is greater than the power that makes first sub-basket 101 carry out deformation, first sub-basket 101 will also rotate, nevertheless first sub-basket 101 is rotatory can not influence the fracture of easy-to-break portion 24 with the irrotational, because there is movable latch fitting 12 to act on between first sub-basket 101 and the second sub-basket 102, just so can not make the lead screw 22 that draws take place idle running.

Further, in order to prevent the traction screw 22 from twisting and deforming itself when the breakable part 24 is not twisted off, the traction screw 22 of the present embodiment is formed by winding at least two wires around each other, so that the shaft strength of the traction screw 22 can be enhanced and the torque can be transmitted more favorably.

Further, for the breakable portion 24 of the present embodiment, the breakable portion 24 is made of 304 stainless steel for medical use, and breaks when the shear force is greater than or equal to 1 newton due to tangential rotation, and in order to achieve the breakable effect, it can be designed by thickness, because the thinner the thickness of the metal is, the metal can be twisted off, and it should be noted that, because the movable resistance of the basket body 1 in the basket sheath 2 is smaller, the phenomenon that the breakable portion 24 breaks during the pushing process is not caused.

Further, to the concrete structure of the activity latch fitting 12 of this embodiment, then can adopt the activity latch fitting 12 and the impulse pipe 21 that the cross-section is the hexagon, and activity latch fitting 12 transversely is provided with two perforation 121 to rely on perforation 121, activity latch fitting 12 wears to locate on basket 11, and the design not only can satisfy the activity of making a round trip of activity latch fitting 12 on basket 11 like this, can also avoid, even first sub-basket 101 takes place rotatory back, also can not transmit the revolving force for second sub-basket 102.

Further, the traction screw 22 and the pushing pipe 21 of the present embodiment are both completed by manually operating the handle portion 3, so the present embodiment is further provided with the handle portion 3, as for the constitution of the handle part 3, the utility model also comprises the handle part 3, the handle part 3 comprises a fixed handle 31, a movable handle 32 and a pull ring 33, the fixed handle 31 and the movable handle 32 are both provided with a ring mouth 33, the fixed handle 31 is fixedly connected with the basket sheath pipe 2, the pushing pipe 21 extends out of the fixed handle 31 and is fixedly connected with the movable handle 32, the traction screw rod 22 passes through the movable handle 32 and is connected with the pull ring 33, the manual force acts on the movable handle 32 and the pull ring 33, so that the push tube 21 and the traction screw rod 22 can achieve the push-pull function, the traction screw rod 22 can also rotate relative to the movable handle 32, the initial distance between the movable handle 32 and the fixed handle 31 is a, and the distance a is equal to the distance that the traction screw rod 22 and the pushing tube 21 push inwards together. Therefore, the above-mentioned operations of the traction screw 22 and the push tube 21 can be satisfied by manually manipulating the corresponding movable handle 32 and the pull ring 33.

Furthermore, in order to prevent the rotation of the traction screw 22 when the traction screw 22 is pushed or pulled, the movable handle 32 of the present embodiment is provided with a groove 35, the shape of the groove 35 is matched with that of the pull ring 33, and after the pull ring 33 is embedded in the groove 35, the pull ring 33 cannot rotate. That is, when the traction screw rod 22 and the push tube 21 are synchronously pushed inwards, the tension spring 33 can be embedded into the groove 35, so that the rotation of the tension spring 33 can be limited.

Further, for the convenience of quick identification of personnel, the fixed handle 31 and the movable handle 32 are provided with different color marks, and the movable lock is yellow, so that the movable lock is orange under NBI, and the movable lock is convenient to distinguish.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A disposable net basket, its characterized in that: comprises a basket body and a basket sheath tube, the basket body is accommodated at the tail end of the basket sheath tube, the basket body comprises a basket, a movable locking piece and a basket net, the basket forms a first sub-basket and a second sub-basket with adjustable sizes under the constraint of the movable locking piece, the basket net is arranged on the second sub-basket, a pushing pipe used for pushing and contacting the movable locking piece is arranged in the basket sheath pipe, the shapes of the movable locking piece and the pushing tube are equal and are all edge tubes, the shape of the inner cavity at the tail end of the basket sheath tube is matched with the shapes of the movable locking piece and the pushing tube, the first sub-basket is connected with a traction screw rod, a fracture part which can be cut off under the action of torsion is arranged between the traction screw rod and the first sub-basket, the traction screw rod is positioned in the hollow cavity of the pushing pipe, when the pushing pipe is pushed by the basket sheath pipe, the pushing pipe is pushed against the inner wall of the basket sheath pipe by the edge.

2. A disposable pick-up basket as recited in claim 1, wherein: the traction screw rod is formed by winding at least two metal wires mutually.

3. A disposable pick-up basket as recited in claim 1, wherein: the breakable part is made of medical 304 stainless steel and breaks when the breakable part is subjected to a tangential rotational shear force of more than or equal to 1 Newton.

4. A disposable pick-up basket as recited in claim 1, wherein: the cross-section of activity latch fitting and promotion pipe is the hexagon, just the activity latch fitting transversely is provided with two and perforates, and relies on the perforation makes the activity latch fitting wears to locate on the basket.

5. A disposable pick-up basket as recited in claim 1, wherein: the manual pulling device is characterized by further comprising a handle part, the handle part comprises a fixed handle, a movable handle and a pulling ring, the fixed handle and the movable handle are both provided with ring openings, the fixed handle is fixedly connected with a basket sheath tube, the pushing tube extends out of the fixed handle and is fixedly connected with the movable handle, the pulling screw rod penetrates through the movable handle and is connected with the pulling ring, manual force acts on the movable handle and the pulling ring, the pushing tube and the pulling screw rod can achieve the pushing and pulling effect, and the pulling screw rod can rotate and move relative to the movable handle.

6. A disposable pick-up basket as recited in claim 5, wherein: the movable handle is provided with a groove, the shape of the groove is matched with that of the pull ring, and the pull ring is embedded into the groove, so that the pull spring cannot rotate.

7. A disposable pick-up basket as recited in claim 5, wherein: the fixed handle and the movable handle are provided with marks in different colors, and the movable lock is yellow.