CN219306866U - Thoracic cavity puncture outfit - Google Patents

Abstract

The utility model provides a thoracic cavity puncture device, which comprises a puncture assembly and a sheath tube assembly, wherein the puncture assembly comprises a puncture needle and a puncture handle, the proximal end of the puncture needle is connected with the puncture handle, the sheath tube assembly comprises a sheath tube and a sheath tube handle, the proximal end of the sheath tube is connected with the sheath tube handle, the sheath tube assembly is provided with an instrument channel which axially penetrates, the puncture needle is arranged in the instrument channel, the puncture assembly is provided with a guide wire channel which axially penetrates, and the puncture handle is arranged at the proximal end side of the sheath tube handle and is detachably locked with the sheath tube handle. The utility model solves the problem that laparoscopic puncture instruments are always used in the current clinical thoracoscopic puncture, can be matched with guide wires for use, can be applied to various bedside operations, reduces the operation difficulty and operation cost in the thoracocentesis, improves the operation efficiency, reduces the operation wound of a patient, and is beneficial to the postoperative recovery of the patient.

Description

Thoracic cavity puncture outfit

Technical Field

The utility model relates to the field of medical equipment, in particular to a thoracic cavity puncture outfit.

Background

Thoracoscopic surgery is a minimally invasive surgery and is widely used because of its low trauma, low postoperative pain, and low complications. Before performing a thoracoscopic procedure, a doctor needs to puncture the chest wall of a patient using a thoracoscopic puncture outfit to create a surgical path. The thoracoscope puncture outfit mainly comprises two parts: a puncture needle and a sheath. Wherein the tip of the puncture needle is used for puncturing the skin and muscle of the outer layer of the chest of a patient, and the sheath tube is withdrawn from the puncture needle after the sheath tube enters the chest along with the puncture needle, so that the sheath tube is left for providing a channel for surgical instruments to enter the human body.

Currently, the laparoscopic puncture outfit is used in clinic. The existing laparoscope puncture outfit is divided into two types according to manufacturing materials and use conditions, wherein one type of the laparoscope puncture outfit is a reusable puncture outfit, the other type of the laparoscope puncture outfit is a disposable puncture outfit, the whole reusable puncture outfit is made of metal materials, and the whole disposable puncture outfit is made of polymer materials. However, the reusable puncture outfit has high manufacturing cost, needs disinfection and sterilization after each use, has lower use efficiency, has sharp head end of the puncture needle, is easy to hurt the lung of a patient, and has larger puncture risk. The disposable puncture outfit reduces the manufacturing cost, but because of the limitation of the high polymer material, when the puncture force is large, the tube body of the sheath tube can bend and deform, and the using hand feeling and the operation effect are affected. In addition, the polymer sheath tube is in order to ensure the strength of the tube body, and the wall thickness needs to be ensured to be large enough, so that the puncture wound of a patient can be increased under the condition that the internal instrument channel is unchanged, the pain is larger, and the postoperative recovery effect is poor. In addition, the currently used laparoscopic puncture outfit cannot be matched with a guide wire, needs to be limited to operate under the condition of an endoscope room, has high requirements on environment, limits the use scene of the laparoscopic puncture outfit, is not easy to quickly find the lesion position when the guide wire is matched, and reduces the operation efficiency.

It should be noted that the information disclosed in the background section of this application is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The utility model aims to provide a thoracocentesis device which is special for thoracocentesis and can be used with a guide wire, so that the operation difficulty and operation cost during thoracocentesis are reduced, the operation efficiency of thoracocentesis is improved, the operation wound of a patient is reduced, and the postoperative recovery is quick.

In order to achieve the above object, the utility model provides a thoracic cavity puncture device, which comprises a puncture assembly and a sheath tube assembly, wherein the puncture assembly comprises a puncture needle and a puncture handle, the proximal end of the puncture needle is connected with the puncture handle, the sheath tube assembly comprises a sheath tube and a sheath tube handle, the proximal end of the sheath tube is connected with the sheath tube handle, the sheath tube assembly is provided with an instrument channel which axially penetrates, the puncture needle is arranged in the instrument channel, the puncture assembly is provided with a guide wire channel which axially penetrates, and the puncture handle is arranged on the proximal side of the sheath tube handle and is detachably locked with the sheath tube handle.

Optionally, the sheath is made of a metallic material; and/or, the sheath handle, the puncture handle and the puncture needle are all made of high polymer materials.

Optionally, the sheath is made of stainless steel; and/or, the sheath handle, the puncture handle and the puncture needle are all made of polyethylene.

Optionally, the puncture handle comprises a puncture handle shell and a locking piece; the locking piece is arranged on the far end side of the puncture handle shell and is connected with the puncture handle shell;

the sheath handle comprises a sheath handle shell and a positioning piece; the positioning piece is arranged on the proximal end side of the sheath handle shell and is connected with the sheath handle shell;

the locking piece is locked with the positioning piece in a clamping way, and the locking piece can be unlocked with the positioning piece after being stressed.

Optionally, the latch member includes at least one cantilever elastic latch member, the positioning member has at least one slot, and a free end of the elastic latch member is locked with the slot.

Optionally, the quantity of elasticity fastener is a plurality of, and a plurality of elasticity fastener is about puncture handle's axis symmetry sets up, the draw-in groove with elasticity fastener one-to-one sets up.

Optionally, the puncture handle further comprises an unlocking operation part connected with the locking piece, the unlocking operation part is movably arranged on the puncture handle shell and partially exposed out of the puncture handle shell, and the unlocking operation part is used for forcing the locking piece to be unlocked with the positioning piece by force.

Optionally, the puncture handle further includes a puncture handle end cover, the puncture handle end cover is disposed at a distal end side of the puncture handle housing and is connected with the latch component and the puncture handle housing, the guide wire channel penetrates through the puncture handle housing, the latch component and the puncture handle end cover, one end of the latch component penetrates through a through hole in the puncture handle end cover and then is connected with the positioning component, the latch component can be stressed to generate elastic deformation, and the through hole can also limit the maximum deformation of the latch component in the diameter direction of the through hole.

Optionally, the sheath assembly further includes a sealing member disposed in the sheath handle, the sealing member includes an annular main body portion, one end of the annular main body portion is in locking connection with the positioning member, the other end of the annular main body portion is provided with a sealing lip capable of opening and closing, the sealing lip is in a normally closed state, the positioning member has a shaft portion extending into the sheath handle housing, an annular groove is formed on an outer surface of the shaft portion, one end of the annular main body portion has an annular boss, the annular boss is embedded in the annular groove, and an inner wall of the sheath handle housing is pressed against an outer surface of the annular boss.

Optionally, the sealing lip is composed of a plurality of valve blades arranged along the circumferential direction of the sealing lip, a gap is formed between two adjacent valve blades, a reinforcing part is arranged on each valve blade, and/or a reinforcing part is arranged on the annular main body part.

Compared with the prior art, the thoracocentesis device provided by the utility model has the following beneficial effects:

the thoracocentesis device comprises a puncture assembly and a sheath tube assembly, wherein the puncture assembly comprises a puncture needle and a puncture handle, the proximal end of the puncture needle is connected with the puncture handle, the sheath tube assembly comprises a sheath tube and a sheath tube handle, the proximal end of the sheath tube is connected with the sheath tube handle, the sheath tube assembly is provided with an instrument channel which axially penetrates, the puncture needle is arranged in the instrument channel, the puncture assembly is provided with a guide wire channel which axially penetrates, and the puncture handle is arranged on the proximal side of the sheath tube handle and is locked with the sheath tube handle in a detachable mode. After the device is arranged, a special puncture outfit can be provided for thoracocentesis, and the thoracocentesis outfit provided by the utility model can be matched with a guide wire for use, so that the thoracocentesis position can be conveniently and rapidly found, the operation difficulty and the operation cost during thoracocentesis are reduced, the operation efficiency is improved, the thoracocentesis operation is not limited by the use environment any more, the operation is conveniently carried out under more environmental conditions, and the convenience and the flexibility of the operation are increased. In addition, the thoracic cavity puncture device provided by the utility model has the advantages that the requirements on the operation environment are not so high, even the thoracic cavity puncture device can be operated in a bacteria environment, so that the application environment is flexible, the thoracic cavity puncture device can be applied to various bedside operations, the application range of thoracic cavity puncture is effectively expanded, the puncture part is not required to be pre-expanded during puncture, the operation time is short, the operation wound of a patient is small, the postoperative recovery is quick, the number of instruments in the operation process is reduced, the operation process is simplified, the operation efficiency is improved, and the operation cost is obviously reduced.

Drawings

The figures provided herewith are not necessarily drawn to scale and some components and structures are exaggerated for clarity. Variations of the illustrated embodiments are contemplated. Thus, the description of the various aspects and elements of the embodiments in the drawings is not intended to limit the scope of the present application. In the drawings:

FIG. 1 is a schematic view of an assembled structure of a chest puncture device according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of the chest puncture instrument of FIG. 1;

FIG. 3 is a schematic view of the puncture assembly in the chest puncture device according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of a sheath assembly in a chest puncture device according to an embodiment of the present utility model;

FIG. 5 is a schematic view of the exploded construction of the puncture handle and sheath handle in the thoracocentesis device according to an embodiment of the present utility model;

FIG. 6 is a schematic view of the structure of a lancing handle according to an embodiment of the present utility model;

FIG. 7 is a schematic cross-sectional view of a sheath handle according to an embodiment of the present utility model;

FIG. 8 is a schematic view of the seal as seen from the proximal side of an embodiment of the present utility model;

fig. 9 is a schematic view of the seal member as seen from the distal end side in accordance with the embodiment of the present utility model.

In the accompanying drawings:

10-a puncture assembly; 11-puncture needle; 12-guidewire channel; 13-a puncture handle; 131-a puncture handle housing; 132-a catch piece; 1321-elastic snap fastener; 1322-unlocking an operation portion; 133-a puncture handle end cap; 1331-through holes; 30-a sheath assembly; 31-sheath; 32-instrument channel; 33-sheath handle; 34-a seal; 341-an annular body portion; 3411-convex hull; 342-a sealing lip; 3421-slit; 3422-reinforcing bars; 331-sheath handle housing; 332-positioning piece; 3321-card slot.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the specific embodiments thereof in order to make the objects, advantages and features of the utility model more apparent. It should be noted that the drawings are in a very simplified form and are not drawn to scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model. Furthermore, the structures shown in the drawings are often part of actual structures. In particular, the drawings are shown with different emphasis instead being placed upon illustrating the various embodiments.

As used in this disclosure, the singular forms "a," "an," and "the" include plural referents, the term "or" is generally used in the sense of comprising "and/or" and the term "several" is generally used in the sense of comprising "at least one," the term "at least two" is generally used in the sense of comprising "two or more," and are not to be construed as indicating or implying any relative importance or implying any particular order of such items. The term "proximal" is generally near the end of the operator, the term "distal" is generally near the end of the patient, "one end" and "another end" and "proximal" and "distal" are generally intended to refer to the respective two parts, including not only the endpoints, but also the terms "mounted," "connected," and "coupled" are to be understood in a broad sense, e.g., may be a fixed connection, may be a removable connection, or may be integral; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. Furthermore, as used in this disclosure, an element disposed on another element generally only refers to a connection, coupling, cooperation or transmission between two elements, and the connection, coupling, cooperation or transmission between two elements may be direct or indirect through intermediate elements, and should not be construed as indicating or implying any spatial positional relationship between the two elements, i.e., an element may be in any orientation, such as inside, outside, above, below, or on one side, of the other element unless the context clearly indicates otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. Herein, "axial" refers to a direction of a corresponding axis; "radial" refers to a direction corresponding to perpendicular to an axis; "circumferential" refers to a direction corresponding to about an axis.

The utility model aims at providing a thoracocentesis device to solve the technical problems existing in the prior thoracocentesis device.

The following description refers to the accompanying drawings, and the following embodiments and features of the embodiments may be mutually supplemented or combined without conflict

As shown in fig. 1-4, an embodiment of the present utility model provides a thoracocentesis device comprising a puncture assembly 10 and asheath assembly 30. The puncture assembly 10 comprises apuncture needle 11 and apuncture handle 13. The proximal end of thepuncture needle 11 is connected to apuncture handle 13. Sheathassembly 30 includessheath 31 andsheath handle 33. The proximal end of thesheath 13 is connected to asheath handle 33.Sheath assembly 30 has aninstrument channel 32 extending axially therethrough. Theneedle 11 is placed in theinstrument channel 32 of thesheath assembly 30 and after withdrawal of theneedle 11 from theinstrument channel 32, the surgical instrument can be placed in theinstrument channel 32 of thesheath assembly 30. The penetrating assembly 10 has aguidewire channel 12 extending axially therethrough. The guidewire is disposed in theguidewire channel 12 of the puncture assembly 10. The puncture handle 13 is disposed at the proximal end side of thesheath handle 33 and is detachably locked with thesheath handle 33, so that the puncture assembly 10 and thesheath assembly 30 are not easy to generate relative displacement in the puncture process, and after the puncture is completed, thepuncture needle 11 can be taken out from theinstrument channel 32 only by unlocking the puncture handle 13 and thesheath handle 33, and only thesheath 31 is kept in the body.

In this way, the thoracocentesis operation can be performed under the non-endoscopic room condition, when the thoracocentesis operation is performed, firstly, an incision is formed on the skin of a patient, then, a guide wire enters the thoracocentesis through the incision on the skin of the patient, then, the thoracocentesis device of the utility model rapidly enters the thoracocentesis lesion position along the guide wire through theguide wire channel 12 of the thoracocentesis device, after the position of the thoracocentesis device is determined, the puncture handle 13 and the sheath handle 33 are unlocked, the puncture assembly 10 is removed, thesheath 31 is kept in the body, the thoracocentesis can be completed, and an operation channel is established. Therefore, the thoracocentesis device provided by the embodiment of the utility model is specially used for thoracocentesis, can be matched with a guide wire for use, is convenient for quickly finding out the lesion position of the thoracocentesis, reduces the operation difficulty and operation cost during thoracocentesis, improves the operation efficiency, ensures that the thoracocentesis operation is not limited by the use environment, is convenient to implement under more environment conditions, and increases the convenience and flexibility of the operation, thereby solving the problem that the laparoscopic puncture device is always used for clinical thoracocentesis.

It should also be understood that the thoracic puncture outfit provided by the utility model has low requirements on the operation environment and even can be operated in a bacteria environment, so that the application environment is flexible, the thoracic puncture outfit can be applied to various bedside operations, the application range of thoracic puncture is effectively expanded, the puncture part is not required to be pre-expanded during puncture, the operation time is short, the operation wound of a patient is small, the postoperative recovery is quick, the number of instruments in the operation process is reduced, the operation process is simplified, the operation efficiency is improved, and the operation cost is obviously reduced. Bedside surgery is understood to mean the operation of a patient by medical personnel at the bedside of a hospital bed.

The thoracic cavity puncture outfit provided by the embodiment of the utility model can be a reusable product or a disposable product, and in the embodiment, the thoracic cavity puncture outfit provided by the embodiment of the utility model is a disposable product, so that the use efficiency is convenient to improve. The surgical instrument described above may be an instrument for performing a surgical operation, or may be an endoscope for image acquisition, and the type of surgical instrument is not limited in the present application.

Sheath 31 is preferably made of a metallic material to ensure its strength during penetration and to reduce the risk of bending deformation during penetration. When thesheath 31 is a metal tube, the specification of the sheath can be smaller than that of the existing sheath, such as the wall thickness of thesheath 31 is smaller, or the outer diameter of thesheath 31 is smaller, or both the wall thickness and the outer diameter of thesheath 31 are smaller, so that the incision on the skin of a patient can be reduced, pain of the patient can be relieved, and postoperative recovery of the patient can be facilitated. Optionally, the gauge ofsheath 31 does not exceed 14F. Thesheath 31 is preferably made of a biocompatible and resilient material, such as stainless steel, nitinol or other suitable conventional medical grade metallic elastomer, which in this embodiment is schematically illustrated. Thesheath 31 made of stainless steel can basically meet the actual use requirements, and the material and manufacturing cost are low. The distal end ofsheath 31 may be beveled or flattened.

Sheath handle 33 is preferably made of a polymeric material to reduce material and manufacturing costs. Because plastic has low cost, easy processing, light weight and toughness, the sheath handle 33 is preferably made of plastic, such as: PVC (polyvinyl chloride), PE (polyethylene), PP (polypropylene), PS (polystyrene), ABS (acrylonitrile butadiene styrene), PC (polycarbonate), TPE (thermoplastic elastomer), etc., and the sheath handle 33 may be made of a combination of one or more high polymer materials. In this embodiment, the sheath handle 33 is made of PE material.

Thesheath 31 and the sheath handle 33 are assembled and connected by any suitable means after being molded separately. The connection between the proximal end of thesheath 31 and the sheath handle 33 is not particularly limited, and may be, for example, one or more of adhesion, pressure bonding, welding, and the like, so long as the two are firmly connected and are not easily separated.

Thepuncture needle 11 and the puncture handle 13 are preferably made of high polymer materials, so as to reduce the material and manufacturing cost. The polymer materials for preparing thepuncture needle 11 and the puncture handle 13 may be referred to as the polymer materials for preparing thesheath handle 33. The connection between the proximal end of thepuncture needle 11 and the puncture handle 13 is not required, and the two are not easily separated as long as they are firmly connected. Illustratively, the proximal end of theneedle 11 and thehandle 13 may be attached by one or more of adhesive, hot melt, crimping, welding, and the like.

The tip of the needle 11 (corresponding to the distal-most end) is preferably smooth to reduce injury to the patient from the tip of theneedle 11 and to increase the safety of the puncture. In order to make the tip of thepuncture needle 11 unsharpened, the edge of the tip may be rounded, or the edge of the tip may be covered with a protective film.

The locking mode between the puncture handle 13 and the sheath handle 33 may be any suitable mechanical locking mode, and in this embodiment, the locking mode between the puncture handle 13 and the sheath handle 33 is locking by clamping, which has a simple structure, low use cost, and convenient locking and unlocking operations. When in use, the distal end face of the puncture handle 13 and the proximal end face of the sheath handle 33 are automatically clamped and locked after being attached, so that the puncture handle 13 and the sheath handle 33 are effectively prevented from shifting to influence the operation hand feeling in the use process. The method has no special requirements on the mode of realizing the clamping locking, such as a rotary lock catch structure, a sliding lock catch structure, a pressing lock catch structure and the like.

In this embodiment, the puncture handle 13 is provided with alocking piece 132, and the sheath handle 33 is provided with apositioning piece 332 that is engaged and locked with thelocking piece 132.Catch piece 132 can elastically deform during assembly and return to its original position after assembly in place to form a lock and provide retention. The positioningmember 332 is a relatively inflexible structure that ensures accurate positioning between the puncture handle 13 and thesheath handle 33, provides a separation resistance in addition to the locking force, and is subject to the main loads in the snap-fit connection. It should be noted that theelastic latch 132 is only one way to achieve the snap locking, and as those skilled in the art will understand, there are a snap formed by the positioningmember 332 and therotatable latch 132, and a fitting structure formed by the positioningmember 332 and themovable latch 132, which are also within the scope of the present application.

As shown in fig. 2 and 5, in one embodiment, the lancinghandle 13 includes a lancinghandle housing 131 and alatch 132; alatch 132 is provided at a distal end side of the puncture handlehousing 131 and is connected to the puncture handlehousing 131, and further, thelatch 132 is partially disposed in the puncture handlehousing 131; the sheath handle 33 includes asheath handle housing 331 and apositioning member 332; thepositioning piece 332 is provided at the proximal end side of thesheath handle housing 331 and is connected to thesheath handle housing 331, and further, thepositioning piece 332 is partially disposed in thesheath handle housing 331; when the distal end face of the puncture handle 13 is attached to the proximal end face of thesheath handle 33, thelocking piece 132 and thepositioning piece 332 can be automatically engaged and locked, and thelocking piece 132 can be unlocked from thepositioning piece 332 after being forced.

In one embodiment, the lockingmember 132 includes at least one cantileverelastic locking member 1321, the positioningmember 332 has at least onelocking slot 3321, and the free end of theelastic locking member 1321 is locked with thelocking slot 3321 on thepositioning member 332. It can be appreciated that the free end of theelastic buckle 1321 is used as a locking end, and the locking end has a blocking surface to prevent theelastic buckle 1321 from being separated from the lockinggroove 3321, and when theelastic buckle 1321 is deformed under force, the locking end can be separated from the lockinggroove 3321. In practice, pressure in the radial direction of the puncture handle 13 may be applied to theelastic locking element 1321, so that theelastic locking element 1321 is bent and deformed, and the locking end may be disengaged from the lockinggroove 3321.

As an embodiment, the number ofelastic fasteners 1321 is plural, preferably twoelastic fasteners 1321. The plurality ofelastic locking pieces 1321 are symmetrically arranged about the axis of thepuncture handle 13, and the lockinggrooves 3321 are arranged in one-to-one correspondence with theelastic locking pieces 1321. When locking by using a plurality ofelastic snap members 1321, the locking is more firm and reliable.

As shown in fig. 1-5, in one embodiment, the puncture handle 13 further includes an unlockingoperation portion 1322 connected to a locking piece 132 (e.g., an elastic locking piece 1321). The unlockingoperation portion 1322 is movably provided on the puncture handlehousing 131, and is partially exposed to the outside of the puncture handlehousing 131. The unlockingoperation portion 1322 is used for forcing thelocking piece 132 to unlock from thepositioning piece 332. The unlockingoperation portion 1322 is not limited in structure, and may be any suitable structure such as a knob or a button, and in this embodiment, the button is schematically described.

In an embodiment, when the free end of theelastic buckle 1321 is in a connection state with theslot 3321, the unlockingoperation portion 1322 can force theelastic buckle 1321 to generate elastic deformation, so that the free end of theelastic buckle 1321 is in a releasable state with theslot 3321, and further unlocking between the puncture handle 11 and the sheath handle 33 is achieved.

Further, when the number of theelastic fastening members 1321 is plural, eachelastic fastening member 1321 is actually controlled to be unlocked by a different unlockingoperation portion 1322. For example, when the unlockingoperation portion 1322 is manually pressed, theelastic buckle 1321 is deformed to be bent; when the unlockingoperation portion 1322 is released, theelastic buckle 1321 can be restored to the original state. The number of theelastic fastening members 1321 is generally two, the twoelastic fastening members 1321 are symmetrically arranged about the axis of thepuncture handle 13, the twoelastic fastening members 1321 are connected with the two unlockingoperation portions 1322 in one-to-one correspondence, and each unlockingoperation portion 1322 is movably arranged on the puncture handlehousing 131 and partially exposed outside the puncture handlehousing 131 for the operator to control.

As shown in fig. 1 to 6, in one embodiment, the puncture handle 13 further includes apuncture handle cap 133, and thepuncture handle cap 133 is provided on the distal end side of the puncture handlehousing 131 and connects thecatch piece 132 and the puncture handlehousing 131. Theguidewire channel 12 extends through the puncture handlehousing 131, the lockingelement 132 and the puncture handleend cap 133. Thepuncture handle cap 133 can close the distal end side of the puncture handlehousing 131, and also can play a certain limiting role on thelocking piece 132. Thepuncture handle cap 133 is provided with a through hole 1331 (see fig. 6) through which the locking piece 132 (preferably the elastic locking piece 1321) passes, and one end of thelocking piece 132 is connected to thepositioning piece 332 after passing through the throughhole 1331 of thepuncture handle cap 133. Further, thelatch 132 is capable of being elastically deformed by force, and the throughhole 1331 is also capable of limiting the maximum deformation amount of thelatch 132 in the radial direction of the throughhole 1331. In the illustration of the cantilever typeelastic fastening member 1321, when the operator presses the two unlockingoperation portions 1322, the twoelastic fastening members 1321 elastically deform in the direction approaching each other until theelastic fastening member 1321 is blocked by the wall of the throughhole 1331 and does not continue to deform, and at this time, the free end of theelastic fastening member 1321 and thefastening slot 3321 are in a releasable state.

Theretainer 332 may also be used as an end cap for thesheath handle housing 331 to close the proximal side of thesheath handle housing 331. In one embodiment, theretainer 332 has a stepped surface that engages and seals against the proximal end surface of thesheath handle housing 331. Compared with the existing laparoscope puncture outfit, the sheath handle 33 provided by the utility model has the advantages of less parts, simple structure and low manufacturing cost.

As shown in fig. 1-5, and 7-9, in one embodiment, thesheath assembly 30 further includes aseal 34, theseal 34 being disposed inside thesheath handle 33. Theseal 34 may provide for sealing of theinstrument channel 32 when a guidewire or surgical instrument is not inserted into theinstrument channel 32, and may also provide for sealing of the guidewire or surgical instrument when the guidewire or surgical instrument is inserted into theinstrument channel 32. If the guide wire is led into theinstrument channel 32, the sealingelement 34 wraps the peripheral surface of the guide wire to seal; if a surgical instrument is introduced into theinstrument channel 32, the sealingelement 34 wraps the outer peripheral surface of the surgical instrument to seal; thereby preventing body fluid from flowing out of the proximal end of theinstrument channel 32 during lancing or during surgery. Theseal 34 is normally closed, and when the guidewire or surgical instrument is not inserted into theinstrument channel 32, theseal 34 is in a closed state, and when the guidewire or surgical instrument is inserted into theinstrument channel 32, theseal 34 is opened, and when the guidewire or surgical instrument is withdrawn from theinstrument channel 32, theseal 34 is again reclosable to a normally closed state.

Theseal 34 is made primarily of an elastically compressible material, such as silicone, rubber, or the like, and it is within the scope of the present utility model to have other materials other than silicone, rubber, or the like that are suitable and capable of achieving the same or similar functions. In other embodiments, theseal 34 may be made of a metallic material, such as a relatively soft durometer metallic material.

In a particular embodiment, theseal 34 includes anannular body portion 341 and a sealinglip 342. One end of theannular body 341 is fixedly connected to thepositioning member 332, and the other end is connected to an openable andclosable seal lip 342. The sealinglip 342 is normally closed, and is opened to tightly wrap the guide wire or the surgical instrument to secure the sealing property. Theseal lip 342 includes theslit 3421, and the shape of theslit 3421 is not required, and any suitable shape such as "one", "ten", and "Y" is used, and in this embodiment, theslit 3421 having a cross shape is schematically illustrated.

In this embodiment, the positioningmember 332 has a shaft portion (not labeled) extending into thesheath handle housing 331, the outer surface of the shaft portion is formed with an annular groove (see the position of the virtual coil in fig. 7), the one end of the annularmain body portion 341 has an annular boss, the annular boss is embedded in the annular groove, and meanwhile, the inner wall of thesheath handle housing 331 is further pressed against the outer surface of the annularmain body portion 341, so that the sealingmember 34 is firmly clamped and fixed between the positioningmember 332 and thesheath handle housing 331.

Theseal lip 342 is generally composed of a plurality of leaflets disposed in the circumferential direction thereof, with agap 3421 formed between adjacent two of the leaflets. Preferably, a reinforcing portion is provided on each of the leaflets, and/or a reinforcing portion is provided on theannular body portion 341. The provision of the reinforcement further prevents the problem of theseal 34 deforming too much to rebound during withdrawal of the guidewire or surgical instrument.

The reinforcement may be astiffener 3422 or aconvex hull 3411. In this embodiment, the inner surface of each leaflet of the sealinglip 342 is provided with a reinforcingrib 3422, and the inner surface of the annularmain body 341 is provided with aconvex hull 3411, and the outer surface of the annularmain body 341 is recessed at a position corresponding to theconvex hull 3411, and at this time, the reinforcing portion is not easily blocked by the sheath handle. However, in other embodiments of the present application, the outer surface ofannular body portion 341 is provided withconvex hull 3411 and/or the outer surface of the leaflet is provided withribs 3422. Theannular body 341 is preferably provided with a plurality ofconvex hulls 3411 uniformly along its circumferential direction. Theseal 34 is typically integrally formed and should have good sealing and resiliency.

In summary, the utility model provides a special thoracocentesis device for thoracocentesis, and the thoracocentesis device can be used with a guide wire, so that the thoracocentesis device is convenient to quickly find the position of a thoracocentesis lesion, reduces the operation difficulty and the operation cost during thoracocentesis, improves the operation efficiency, prevents the thoracocentesis operation from being limited by the use environment, is convenient to implement under more environmental conditions, and increases the convenience and the flexibility of the operation.

In addition, compared with the existing thoracoscopic puncture operation, the thoracocentesis device provided by the utility model has the advantages that the requirements on the operation environment are not so high, and even the thoracocentesis device can be operated in a bacteria environment, so that the application environment is flexible, the thoracocentesis device can be applied to various bedside operations, the application range of thoracocentesis is effectively expanded, the puncture part does not need to be pre-expanded during the puncture, the operation time is short, the operation wound of a patient is small, the postoperative recovery is quick, the number of instruments in the operation process is reduced, the operation process is simplified, the operation efficiency is improved, and the operation cost is reduced.

It should be noted that modifications and additions to the present disclosure may be made by those of ordinary skill in the art without departing from the scope of the present disclosure, which is also to be considered as being within the scope of the present disclosure. Equivalent embodiments of the present utility model will be apparent to those skilled in the art having the benefit of the teachings disclosed herein, when made with the changes, modifications, and variations to the utility model; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims (10)

1. The utility model provides a thoracic cavity puncture ware, its characterized in that includes puncture subassembly and sheath pipe subassembly, puncture subassembly includes pjncture needle and puncture handle, the proximal end of pjncture needle is connected the puncture handle, sheath pipe subassembly includes sheath pipe and sheath pipe handle, the proximal end of sheath pipe is connected the sheath pipe handle, sheath pipe subassembly has the instrument passageway that the axial runs through, the pjncture needle is arranged in the instrument passageway, puncture subassembly has the seal wire passageway that the axial runs through, the puncture handle sets up the proximal side of sheath pipe handle, and with sheath pipe handle in detachable mode locking.

2. The chest puncture instrument of claim 1, wherein the sheath is made of a metallic material; and/or, the sheath handle, the puncture handle and the puncture needle are all made of high polymer materials.

3. The chest puncture instrument of claim 2, wherein the sheath is made of stainless steel; and/or, the sheath handle, the puncture handle and the puncture needle are all made of polyethylene.

4. The thoracocentesis device of any one of claims 1-3, wherein the puncture handle comprises a puncture handle housing and a catch; the locking piece is arranged on the far end side of the puncture handle shell and is connected with the puncture handle shell;

the sheath handle comprises a sheath handle shell and a positioning piece; the positioning piece is arranged on the proximal end side of the sheath handle shell and is connected with the sheath handle shell;

the locking piece is locked with the positioning piece in a clamping way, and the locking piece can be unlocked with the positioning piece after being stressed.

5. The chest puncture instrument according to claim 4, wherein the locking member comprises at least one cantilevered elastic locking member, the positioning member has at least one locking groove, and the free end of the elastic locking member is locked with the locking groove.

6. The thoracic cavity puncture device according to claim 5, wherein the number of the elastic snap members is plural, the plural elastic snap members are symmetrically arranged with respect to the axis of the puncture handle, and the snap grooves are arranged in one-to-one correspondence with the elastic snap members.

7. The thoracocentesis device of claim 4, wherein the puncture handle further comprises an unlocking operation portion connected with the locking member, the unlocking operation portion being movably disposed on the puncture handle housing and partially exposed outside the puncture handle housing, the unlocking operation portion being configured to force the locking member to unlock the positioning member.

8. The thoracocentesis device according to claim 4, wherein the puncture handle further comprises a puncture handle end cap disposed on a distal side of the puncture handle housing and connecting the locking element and the puncture handle housing, the guide wire passage penetrates through the puncture handle housing, the locking element and the puncture handle end cap, one end of the locking element penetrates through a through hole in the puncture handle end cap and then is connected with the positioning element, the locking element is capable of being elastically deformed by being stressed, and the through hole is capable of limiting a maximum deformation amount of the locking element in an upward direction of the through hole.

9. The chest puncture instrument according to claim 4, wherein the sheath tube assembly further comprises a sealing member arranged in the sheath tube handle, the sealing member comprises an annular main body portion and a sealing lip, one end of the annular main body portion is fixedly connected with the positioning member, the other end of the annular main body portion is connected with the openable sealing lip, the sealing lip is in a normally closed state, the positioning member is provided with a shaft portion extending into the sheath tube handle shell, an annular groove is formed in the outer surface of the shaft portion, an annular boss is arranged at one end of the annular main body portion and is embedded in the annular groove, and the inner wall of the sheath tube handle shell is pressed against the outer surface of the annular boss.

10. The thoracic puncture device according to claim 9, wherein the sealing lip is composed of a plurality of leaflets provided in the circumferential direction thereof, a gap is formed between two adjacent leaflets, a reinforcing portion is provided on each of the leaflets, and/or a reinforcing portion is provided on the annular main body portion.

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