CN217430051U - Gelatin sponge presetting device with protective sleeve - Google Patents

Abstract

The utility model discloses a gelatin sponge presetting device with a protective sleeve, which comprises a metal needle, wherein the metal needle is provided with a first channel with an upper opening and a lower opening along the axial direction; the plugging object is preset in the first channel and can plug a wound channel left by lung puncture; the blocking piece is arranged at the far end of the first passage and can close the far end opening of the first passage; the ejector pin can move axially along the first channel and can push the plugging object to discharge the metal needle from the distal end opening of the first channel. The whole device can be inserted into an outer tube used for lung biopsy, the wound passage caused by the appearance insertion can be closed, and the safety of the lung biopsy is improved.

Description

Gelatin sponge presetting device with protective sleeve

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a gelatin sponge who takes protective sheath presets device.

Background

Soft tissue tumors are diseases seriously harming human health and life, the incidence rate gradually rises in recent years, the onset age gradually declines, and early detection, correct diagnosis and timely treatment have important influence on prognosis. With the continuous improvement of examination means and methods, the diagnosis accuracy is gradually improved, but a large part of tumors still have no typical imaging characteristics and are difficult to diagnose. Biopsy aspiration is the primary way to obtain a pathological diagnosis.

The biopsy puncture is to introduce an outer tube into a pathological part, introduce a sampling needle from the outer tube, take materials from a tumor body by the sampling needle, return the sampling needle into the outer tube after taking the materials, and take the materials out through a protective channel formed by the outer tube. The risk of lung puncture is relatively small but there is still some risk, more commonly pneumothorax and bleeding. The lung is enclosed in the pleura, and a puncture injury of the outer tube may leave an air outlet in the lung resulting in air leakage into the chest cavity and resulting in pneumothorax. It may also bleed in the adult lung, causing hemoptysis. Therefore, how to rapidly close the outer tube after the outer tube is taken out of the lung becomes a problem to be solved.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to provide a gelatin sponge preset device with a protective sleeve, which is inserted into an outer tube used for lung biopsy, can close a wound channel caused by appearance insertion, and improves the safety of lung biopsy.

In order to achieve the above purpose, the utility model discloses a technical scheme is: take gelatin sponge of protective sheath to preset device, its characterized in that: the device comprises a metal needle, wherein a first channel with an upper opening and a lower opening is formed in the metal needle along the axial direction of the metal needle; the plugging object is preset in the first channel and can plug a wound channel left by lung puncture; a barrier disposed at a distal end of the first passage and capable of closing a distal opening of the first passage; the ejector pin can move axially along the first channel and can push the blocking object to discharge the metal needle from the far-end opening of the first channel.

The beneficial effects of the utility model reside in that: when the biopsy of the lung is completed, the outer tube remains in the lung, whereupon the metal needle is introduced from the outer tube, and then the metal needle and the outer tube are pulled to move proximally in unison to dislodge the lung. In the moving process of the metal needle, the thimble props against the blocking object to be fixed, the metal needle and the thimble generate relative displacement, the thimble pushes the blocking object positioned in the first channel out of the first channel to enter a wound channel left by the catheter, and the wound channel left by the lung is blocked, so that the puncture safety is improved. Meanwhile, due to the arrangement of the blocking piece, the contact between a blocking object and blood in the process that the metal needle enters the outer tube is avoided, and the utilization rate of the blocking object is greatly improved.

Further, the blocking member is a membrane covering the metal needle, and the membrane can cover the distal opening of the first passage and move synchronously with the metal needle. The diaphragm plays the barrier effect, and when diaphragm and metal needle moved towards the near-end in step, the stopper directly punctured the diaphragm, and the first passageway of quick discharge.

Further, the diaphragm is made of polyurethane materials and is adhered to the outer wall of the metal needle.

Furthermore, the far end of the plugging object is flush with the far end of the first channel, so that the plugging object can be abutted against the diaphragm, and the diaphragm is rapidly punctured by the plugging object in the moving process.

Further, the blocking piece is of a block structure and is inserted into the first channel in an interference mode.

Further, the barrier is made of a solid gelatin material, and the distal end of the barrier is flush with the distal end of the first channel. The solid gelatin material can realize the insertion connection with the first channel, and meanwhile, the gelatin material cannot expand after blood suction, and is not easy to deform when blocking a blocking object and an external space, so that the gelatin material can be conveniently pushed out of the first channel by the push rod.

Further, the height of the barrier is 2-3 cm.

Further, the plugging substance is any one of silk thread or gelatin sponge.

Further, the locking device also comprises a locking seat which is sleeved outside the metal needle and can be clamped with the outer tube. The added locking seat can fix the metal needle and the outer tube so as to pull the metal needle and the outer tube to move synchronously. The locking seat can slide up and down along the axis of the metal needle, and the position of the locking seat can be adjusted according to the depth of the outer tube inserted into the lung so as to be suitable for outer tubes of various specifications.

Further, a rubber pad is arranged between the locking seat and the metal needle, and the rubber pad is embedded in the locking seat and is in interference fit with the metal needle. The rubber pad is arranged to fix the locking seat and the metal needle, when the position of the locking seat is adjusted, external force must be applied to pull the locking seat, and when no external force exists, the locking seat and the metal needle are fixed.

Drawings

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

fig. 2 is a cross-sectional view and a partial enlarged view of an embodiment of the present invention;

FIG. 3 is a cross-sectional view and a partial enlarged view of another embodiment of the present invention;

FIG. 4 is a schematic view of the structure of the metal needle and the outer tube in another embodiment of the present invention;

fig. 5 is a perspective view illustrating a connection state of the metal needle and the locking seat according to an embodiment of the present invention.

In the figure:

1. a metal needle; 11. a first channel; 2. a stopper; 3. a barrier; 4. a thimble; 5. a locking seat; 51. Buckling; 6. an outer tube; 7. and (7) a rubber pad.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

For ease of description, the following description uses the terms "proximal" and "distal", where "proximal" refers to the end near the operative end and "distal" refers to the end distal to the operative end that enters the body.

Referring to the attacheddrawing 1, the gelatin sponge presetting device with the protective sleeve of the present invention comprises ametal needle 1, wherein themetal needle 1 is provided with afirst channel 11 with an upper opening and a lower opening along the axial direction. Thefirst channel 11 is internally provided with aplugging object 2 in advance, and theplugging object 2 can plug a wound channel left by lung puncture. The far end of thefirst channel 11 is provided with a blockingpiece 3 capable of closing the far end opening of thefirst channel 11, and theblocking piece 3 can block the outer space of the blockingobject 2 and themetal needle 1. Thefirst channel 11 is also inserted with athimble 4 capable of sliding along the first channel, and thethimble 4 can push theplugging object 2 to discharge themetal needle 1 from the distal opening of thefirst channel 11.

When the biopsy of the lung is completed, theouter tube 6 for guiding the sampling needle remains in the lung, at which time themetal needle 1 is introduced from theouter tube 6, and then themetal needle 1 and theouter tube 6 are pulled to move proximally in synchronization, and the lung is removed. In the moving process of themetal needle 1, thethimble 4 props against the blockingobject 2 to be fixed, themetal needle 1 and thethimble 4 generate relative displacement, thethimble 4 pushes theblocking object 2 in thefirst channel 11 out of thefirst channel 11 to enter a wound channel left by the catheter, and the wound channel left by the lung is blocked, so that the puncture safety is improved. Meanwhile, due to the arrangement of theblocking piece 3, the situation that theblocking object 2 is contacted with blood when themetal needle 1 enters theouter tube 6 is avoided, and the utilization rate of theblocking object 2 is greatly improved.

The pluggingobject 2 comprises plugging articles such as silk threads or gelatin sponge and the like, and can be set into other medical articles beneficial to plugging as long as the absorption of a human body and the plugging of a wound channel are realized.

In one embodiment, referring to fig. 2, thebarrier 3 is a membrane covering themetal needle 1, and the membrane can cover the distal opening of thefirst channel 11 to close the distal opening of thefirst channel 11. The diaphragm is pasted outside themetal needle 1 and can move synchronously with themetal needle 1, the diaphragm is made of polyurethane materials, the diaphragm can be damaged under the pushing of theplugging object 2, at the moment, the far-end opening of thefirst channel 11 is opened, and the plugging can be discharged from the far-end opening of thefirst channel 11.

In one embodiment thestopper 2 abuts the septum, i.e. thestopper 2 is flush with the proximal end of thefirst channel 11, ensuring that thestopper 2 can quickly puncture the septum when moving relative to themetal needle 1. The proximal end of themetal needle 1 is also provided with a chamfer, and the chamfer is arranged to prevent the arm from being punctured by themetal needle 1 when the arm is coated outside themetal needle 1.

In another embodiment, referring to fig. 3, the blockingmember 3 is a block structure and is inserted into thefirst passage 11 by interference fit. The blockingpart 3 is made of solid gelatin, and the absorbable gelatin is made into a block structure and inserted into thefirst channel 11. When themetal needle 1 enters theouter tube 6, the blood in the lung firstly contacts with the solid gelatin in the block structure, and the solid gelatin in the block structure does not expand when contacting with the solid gelatin, and can be quickly discharged out of thefirst channel 11 under the extrusion of the pluggingsubstance 2.

The blockingpart 3 is flush with the near end of thefirst channel 11, the height of the blockingpart 3 is 2-3cm, and the blocking part and the external blood are blocked, and meanwhile, the blocking part can be rapidly discharged out of thefirst channel 11 when the blockingobject 2 moves relative to themetal needle 1.

Thethimble 4 is a tubular structure, one end of thethimble 4 extends into thefirst channel 11 and is abutted with the distal end of the blockingobject 2, and the other end is located outside themetal needle 1. The length of thethimble 4 is greater than that of thefirst channel 11, so that the near end of thethimble 4 is always located outside themetal needle 1 in the process that themetal needle 1 moves along thethimble 4. In the moving process, themetal needle 1 is fixed against thethimble 4, themetal needle 1 slides along thethimble 4, and thethimble 4 pushes out the blockingobject 2 in themetal needle 1.

The tubular structure of thethimble 4 can be set according to the actual use requirement, and a disc can also be set at the tubular near end, the diameter of the disc is slightly smaller than that of thefirst channel 11, and the diameter of the tubular structure is smaller than that of the disc. The disc is abutted against the pluggingobject 2, and the pluggingobject 2 can be quickly pushed out under the action of external force.

In order to support thethimble 4, the near end of thethimble 4 is provided with a supporting part which can be a round structure, a square structure and the like, and the supporting part is convenient for an operator to hold.

In one embodiment, referring to fig. 1 and 4, themetal needle 1 is further provided with a lockingseat 5, and the lockingseat 5 is used for fixing themetal needle 1 and theouter tube 6, so that themetal needle 1 and theouter tube 6 move synchronously when the operation is convenient.

The lockingseat 5 can slide up and down along the axis of themetal needle 1 and can be fixed with themetal needle 1, a rubber pad 7 is arranged between the lockingseat 5 and themetal needle 1, and the rubber pad 7 is embedded in the lockingseat 5 and is in interference fit with themetal needle 1. According to the length ofouter tube 6, adjust the position of lockingseat 5, external force promotes lockingseat 5 and slides alongmetal needle 1, because rubber pad 7 andmetal needle 1 interference match, after the lock frame arrived the position, the frictional force that rubber pad 7 provided lets the position of lockingseat 5 remain motionless.

The lockingseat 5 is provided with a through hole for themetal needle 1 to pass through, the side wall of the through hole is provided with an annular groove along the circumferential direction, and the rubber pad 7 is embedded in the annular groove. And the thickness of the rubber pad 7 is larger than the depth of the annular groove, and the rubber pad 7 can be abutted against themetal needle 1.

In one embodiment, referring to fig. 5, themetal needle 1 is further marked with scales, and the scales can indicate the position where the lockingseat 5 arrives, so that the lockingseat 5 can be accurately adjusted.

In another embodiment, the lockingseat 5 and themetal needle 1 may be in a fixed structure, that is, the position of the lockingseat 5 is not adjustable, and the lockingseat 5 is fixed at the distal end of themetal needle 1. When theouter tube 6 is inserted into the deep part of the lung differently, the metal needles 1 with different lengths are selected, as long as the metal needles 1 are matched with theouter tube 6. Three gauge lengths of 10cm, 15cm and20cm metal needles 1 are typically selected.

The lockingseat 5 is clamped with theouter pipe 6, the lockingseat 5 is provided with a plurality ofbuckles 51, and theouter pipe 6 is provided with clamping grooves matched with thebuckles 51. The buckles are uniformly arranged along the outer wall of the lockingseat 5. The near end of thebuckle 51 is fixed with the far end of the lockingseat 5, and the far end of thebuckle 51 is a free end and can generate elastic deformation and be inserted into a slot. Thebuckle 51 and the lockingseat 5 are integrally formed injection molding pieces.

The specific working process of this embodiment is as follows: after the biopsy is finished, the position of the lockingseat 5 is adjusted to ensure that the far end of themetal needle 1 is flush with the far end of theouter tube 6 after themetal needle 1 enters theouter tube 6. Then themetal needle 1 is inserted into theouter tube 6, and when the distal end of themetal needle 1 is flush with the distal end of theouter tube 6, themetal needle 1 and theouter tube 6 are fixed through the matching of thebuckle 51 and the clamping groove. The ejector pin is then inserted from the proximal opening of thefirst channel 11, allowing the ejector pin to abut the occluding object 2 (the ejector pin may also fit directly into the first channel 11). Then the operator pushes the top rod with one hand to keep the top rod still, and pulls the fixedmetal needle 1 and the fixedouter tube 6 with the other end. At the moment, the ejector rod pushes the blockingobject 2, the position of the blockingobject 2 is kept still, and the blockingobject 2 is pushed out of themetal needle 1 and enters the wound channel in the withdrawing process of themetal needle 1. Finally, themetal needle 1 and theouter tube 6 are completely pushed out of the wound channel, and at the moment, the blockingobject 2 covers the whole lung wound channel and closes the wound channel.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims (10)

1. Take gelatin sponge of protective sheath to preset device, its characterized in that: comprises that

The metal needle is provided with a first channel with an upper opening and a lower opening along the axial direction of the metal needle;

the plugging object is preset in the first channel and can plug a wound channel left by lung puncture;

a barrier disposed at a distal end of the first passage and capable of closing a distal opening of the first passage;

the ejector pin can move axially along the first channel and can push the plugging object to discharge the metal needle from the far-end opening of the first channel.

2. The protective covered gelatin sponge preplacement device of claim 1, wherein: the barrier is a membrane coated outside the metal needle, and the membrane can coat the distal opening of the first channel and move synchronously with the metal needle.

3. The protective covered gelatin sponge preplacement device of claim 2, wherein: the diaphragm is made of polyurethane materials and is adhered to the outer wall of the metal needle.

4. A gelfoam preplacement device with protective cover as claimed in claim 2 wherein: the distal end of the stopper is flush with the distal end of the first channel.

5. The protective covered gelatin sponge preplacement device of claim 1, wherein: the blocking part is of a blocky structure and is inserted in the first channel in an interference mode.

6. A gelatin sponge presetting device with protective sleeve as claimed in claim 5 is characterized in that: the blocking piece is made of solid gelatin material, and the far end of the blocking piece is flush with the far end of the first channel.

7. A gelatin sponge presetting device with protective sleeve as claimed in claim 6 characterized in that: the height of the barrier piece is 2-3 cm.

8. A protective covered gelatin sponge pre-placement device according to any of claims 1-7, characterized in that: the plugging substance is any one of silk threads or gelatin sponges.

9. The protective covered gelatin sponge preplacement device of claim 1, wherein: still include the locking seat, the locking seat cup joints outside the metal needle and can with the outer tube joint, the locking seat can slide from top to bottom along the axis of metal needle.

10. The protective covered gelatin sponge preplacement device of claim 9, wherein: a rubber pad is arranged between the locking seat and the metal needle, and the rubber pad is embedded in the locking seat and is in interference fit with the metal needle.

Images