CN115670615B

CN115670615B - Device for picking up foreign matters in respiratory tract and working method thereof

Info

Publication number: CN115670615B
Application number: CN202211091607.6A
Authority: CN
Inventors: 马晖; 贾玮; 张冬睿; 张永祥; 叶蓁; 张力; 李月川
Original assignee: TIANJIN CHEST HOSPITAL
Current assignee: TIANJIN CHEST HOSPITAL
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-06-20
Anticipated expiration: 2042-09-07
Also published as: CN115670615A

Abstract

The invention relates to the technical field of medical equipment, in particular to a foreign matter pickup device in a respiratory tract and a working method thereof, wherein a pickup cover body assembly comprises a flexible pipe body, a supporting framework and a flexible cover body; the first power component is connected with the supporting framework and provides power for state transition for the supporting framework; the gathering fork assembly comprises a flexible shell and a metal wire; the second power component is connected with each metal wire and provides power for state transition for the metal wires; the flexible cover body is provided with through parts corresponding to the metal wires one by one. In the invention, after the metal wires are inserted into loose foreign matters, the supporting framework drives the flexible cover body to retract inwards by a proper length, so that all the metal wires are bent towards the inner direction of the guide part, and a force towards the inner direction of the guide part is applied to the foreign matters; the edge of the flexible cover body is buckled inwards properly, so that the wrapping effect on the foreign matters can be increased, and the falling risk is effectively reduced in the process of picking up the foreign matters with larger loosening degree.

Description

Device for picking up foreign matters in respiratory tract and working method thereof

Technical Field

The invention relates to the technical field of medical equipment, in particular to a foreign body pickup device in a respiratory tract and a working method thereof.

Background

Respiratory tract foreign bodies are one of the common emergency conditions in life, and after the condition is confirmed, the foreign bodies need to be taken out timely, otherwise, complications are at risk.

The existing device for picking up foreign matters in the respiratory tract comprises a metal basket which can be accommodated in a flexible pipe body, and a power structure for feeding and discharging the flexible pipe body is provided for the metal basket, wherein the metal basket comprises a plurality of bent flexible metal wire bodies uniformly distributed around a set axis, one end of each metal wire body is connected with the power structure, and the other ends of the metal wire bodies are mutually connected. In a natural state, the metal wire bodies are in a bending state of expanding outwards, so that a space capable of containing foreign matters is formed in the middle; when the flexible pipe body is acted by the power structure, the flexible pipe body is stored in the flexible pipe body through deformation; the power structure penetrates through the inside of the flexible pipe body and is led out from the other end of the flexible pipe body so as to be applied with force by a user.

Under the state of accomodating, in flexible body accessible intervenes the means entering respiratory track, when the tip reached the foreign matter place, the metal basket was removed and takes place deformation from flexible body through the drive structure, through suitable application of force, can make the foreign matter enter into the middle part of metal basket from the clearance between the adjacent metal wire body to at the in-process that the flexible wire body removed from the human body, take out.

However, in the actual use process, because the gaps between the flexible metal wire bodies forming the metal basket are larger and have the possibility of deformation, the falling of part of foreign matters is inevitably generated in the process of driving the foreign matters to move out, the problem is especially prominent for the foreign matters with larger loosening degree, and better wrapping is realized in the process of moving out the loose foreign matters, so that the residues in the respiratory tract are avoided, and the problem becomes one of the research directions of related instruments.

Disclosure of Invention

The invention provides a foreign body pickup device in a respiratory tract and a working method thereof, which effectively solve the problems pointed out in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

a foreign matter pickup device in a respiratory tract comprises a pickup cover body assembly, a gathering fork assembly, a first power assembly and a second power assembly;

the pick-up cover body assembly comprises a flexible pipe body, a supporting framework and a flexible cover body; one end of the flexible pipe body is partially diverged to form a containing part, the supporting framework is in a gathering state contained in the containing part, and is in a diverged state outside the containing part, and the flexible cover body is covered inside and/or outside the supporting framework and is supported to form an umbrella-shaped structure when the supporting framework is in the diverged state;

the first power component is connected with the supporting framework and provides state transition power for the supporting framework;

the gathering fork assembly comprises a flexible shell and a metal wire, the flexible shell is sleeved outside the flexible pipe body, the end part of the flexible shell is partially diverged to form a guide part, and the guide part and the accommodating part are coaxial and are fixedly arranged relatively; the metal wires are uniformly distributed in gaps between the flexible pipe body and the flexible shell; the metal wire has a storage state in which the metal wire is stored in the gap, and a forked state in which the end part penetrates through the flexible cover body and enters the umbrella-shaped structure, and the tail end of the metal wire is always bent towards the axial direction of the guide part;

the second power component is connected with each metal wire and provides state transition power for the metal wires;

the flexible cover body is provided with through parts corresponding to the metal wires one by one.

Further, the first power assembly comprises a handle, a push block and a force application rod;

the handle is fixedly connected with the flexible pipe body and is provided with an inner cavity and a sliding groove penetrating through the inner side and the outer side of the cavity;

the pushing block penetrates through the sliding groove and slides along the sliding groove, and the friction force generated by extrusion of the side wall of the sliding groove can be stopped at a required position;

the pushing block is positioned in the inner cavity of the handle, one end of the force application rod is connected with the pushing block, and the other end of the force application rod is connected with the supporting framework.

Further, the pushing block is located at the outer portion of the handle, extends to two sides of the sliding groove in the width direction, and is attached to the outer wall of the handle.

Further, the second power assembly comprises a sliding sleeve, a screw nut and a locking block;

the sliding sleeve is sleeved outside the flexible pipe body, one end of the sliding sleeve is provided with an open end for the flexible casing to enter, the inner wall of the open end is attached to the outer wall of the flexible casing, and the other end of the sliding sleeve extends to the flexible pipe body along the radial direction to form a first convex edge;

the screw rod nut penetrates through the position of the first protruding edge and is attached to the penetrating position, and a second protruding edge is arranged at the end part of the screw rod nut;

the locking block is sleeved outside the screw rod nut and forms a space with the second convex edge for limiting the first convex edge in the length direction of the flexible pipe body together;

the metal wire is fixedly connected with the sliding sleeve, and the screw nut is in threaded connection with a threaded section outside the flexible pipe body.

Further, the flexible housing includes a first section and a second section;

the first section is provided with the guide part and a constant-section pipe body part sleeved outside the flexible pipe body;

one end of the second section is connected with the constant section pipe body part, and the other end of the second section is connected with the second power assembly.

Further, a guide hole is formed in the inner wall of the guide part, and the guide hole is close to the root of the guide part; the metal wire penetrates through the guide hole.

Further, the cross sections of the metal wire and the guide hole are regular quadrangles.

Further, the uniform-section pipe body part of the first section is sleeved outside the second section, through holes corresponding to the metal wires one by one are formed in the inner wall of the second section, and the metal wires penetrate through the through holes;

and at the position of the through hole, the inner wall of the second section is adhered and fixed with the outer wall of the flexible pipe body.

Further, the first section and the second section are adhesively secured.

The working method of the foreign body pickup device in the respiratory tract comprises the following steps:

the picking cover body component and the gathering fork component enter the respiratory tract through the intervention means respectively through the corresponding gathering state and the corresponding storage state;

when the containing part and the guide part reach the position of the foreign matter, the flexible cover body of the pick-up cover body assembly obtains an umbrella-shaped structure in a divergent state by applying force to the first power assembly, so that a space for containing the foreign matter is formed;

the second power component is forced to enable the end part of the metal wire to penetrate through the flexible cover body through the penetrating part and be inserted into the foreign matter through the bending state of the second power component;

the first power component is applied with force again, so that the supporting framework drives the flexible cover body to retract inwards for a proper length, and in the process, extrusion force is applied to the metal wires through the edges of the through parts, so that all the metal wires are bent towards the inner direction of the guide parts;

at the same time, the supporting framework is properly gathered under the action of the edges of the accommodating part.

By the technical scheme of the invention, the following technical effects can be realized:

in the invention, after the metal wires are inserted into loose foreign matters, the supporting framework drives the flexible cover body to retract inwards by a proper length, so that all the metal wires are bent towards the inner direction of the guide part, and a force towards the inner direction of the guide part is applied to the foreign matters; the edge of the flexible cover body is buckled inwards properly, so that the wrapping effect on the foreign matters can be increased, and the falling risk is effectively reduced in the process of picking up the foreign matters with larger loosening degree.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic view of a picking up cover assembly and a gathering fork assembly of the present invention in a state in which the ends pick up foreign matter;

FIG. 2 is a side view of a foreign object pickup device in the respiratory tract;

FIG. 3 is a schematic view of a part of the flexible housing and the flexible cover omitted when the foreign matter is picked up by the whole foreign matter pickup device in the respiratory tract;

FIG. 4 is a schematic view of the support framework from a gathered state to a divergent state (the flexible cover is shown in the divergent state);

FIG. 5 is a schematic illustration of the support frame, flexible cover and guide omitted from picking up foreign objects at the end of the gathering fork assembly;

FIG. 6 is a schematic view of the process from picking up the foreign objects to further wrapping the foreign objects at the ends of the pick up housing assembly and the gathering fork assembly;

FIG. 7 is a schematic illustration showing the force applying rod and support frame received therein with the flexible pipe body partially broken away;

FIG. 8 is an enlarged view of a portion of FIG. 7 at A;

FIG. 9 is a cross-sectional view of the end of the pickup housing assembly and the gathering fork assembly in a condition to pick up foreign objects;

FIG. 10 is a partial enlarged view at B in FIG. 9;

FIG. 11 is an enlarged view of a portion of FIG. 9 at C;

FIG. 12 is a schematic illustration of a through hole and wire shown with a flexible housing partially broken away;

FIG. 13 is a schematic view of the device for picking up foreign matter in the respiratory tract, wherein the flexible tube and part of the flexible housing are omitted;

reference numerals: 1. picking up the cover body assembly; 11. a flexible tube; 11a, a containing part; 12. a support skeleton; 13. a flexible cover; 13a, a through part; 2. a gathering fork assembly; 21. a flexible housing; 21a, a guide part; 21b, a guide hole; 21c, through holes; 22. a wire; 3. a first power assembly; 31. a handle; 31a, a sliding groove; 32. a pushing block; 33. a force application rod; 4. a second power assembly; 41. a sliding sleeve; 42. a screw nut; 43. locking blocks.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 13, a foreign matter pickup device in a respiratory tract comprises a pickup cover body assembly 1, a gathering fork assembly 2, a first power assembly 3 and a second power assembly 4; the pickup cover assembly 1 comprises a flexible pipe body 11, a supporting framework 12 and a flexible cover body 13; one end of the flexible pipe body 11 is partially diverged to form a containing part 11a, the supporting framework 12 is in a gathering state contained in the containing part 11a, and is in a diverged state outside the containing part 11a, and the flexible cover body 13 is covered inside and/or outside the supporting framework 12 and is supported when the supporting framework 12 is in the diverged state to form an umbrella-shaped structure; the first power component 3 is connected with the supporting framework 12 and provides power for state transition for the supporting framework 12; the gathering fork assembly 2 comprises a flexible shell 21 and a metal wire 22, wherein the flexible shell 21 is sleeved outside the flexible pipe body 11, the end part of the flexible shell is partially divergent to form a guide part 21a, and the guide part 21a and the accommodating part 11a are coaxial and are fixedly arranged relatively; the metal wires 22 are uniformly distributed in the gaps between the flexible pipe body 11 and the flexible shell 21; the wire 22 has a housed state in which it is housed in the gap, and a forked state in which the end portion penetrates the flexible cover 13 and enters the umbrella-like structure, and the tip of the wire 22 is always bent in the axial direction of the guide portion 21 a; the second power component 4 is connected with each wire 22 and provides power for state transition for the wires 22; the flexible cover 13 is provided with penetrating portions 13a corresponding to the wires 22 one by one.

As shown in fig. 1 to 5, the invention provides a device which is particularly suitable for picking up foreign matters with larger loosening degree; in the use process, the pickup cover body component 1 and the gathering fork component 2 enter the respiratory tract through the intervention means respectively through the corresponding gathering state and the corresponding storage state; when the accommodating portion 11a and the guide portion 21a reach the position where the foreign matter is located, the flexible cover 13 of the pickup cover assembly 1 can first obtain an umbrella-shaped structure in a divergent state by applying force to the first power assembly 3, so that a space for accommodating the foreign matter is formed.

When the foreign matter enters the space, the end part of the metal wire 22 penetrates through the flexible cover 13 through the penetrating part 13a by applying force to the second power assembly 4, and is inserted into the loose foreign matter through the bending state of the metal wire; when the above steps are completed, the foreign matter obtains a preliminary positioning in the umbrella-shaped structural space.

Subsequently, the supporting frame 12 drives the flexible cover 13 to retract inward by a proper length by applying force to the first power assembly 3 again, and in the process, the edge of the through part 13a applies extrusion force to the wires 22 by controlling the length of the through part 13a, as shown in fig. 6, so that all the wires 22 are bent in the direction of the inside of the guide part 21a, and force towards the inside of the guide part 21a is applied to the foreign matter; meanwhile, the supporting framework 12 is properly gathered under the action of the edge of the accommodating part 11a, so that the edge of the flexible cover 13 is properly buckled inwards, and the wrapping action on the foreign matters can be increased.

After the above operation is completed, the current state of the first power assembly 3 and the second power assembly 4 can be maintained relative to the flexible pipe body 11, and the whole device is taken out of the human body, so that the foreign matters are taken out of the human body, the risk of falling the foreign matters is extremely low in the process, and the problem of picking up the relatively loose foreign matters at present is solved.

As a preference to the above-described embodiment, in order to reduce the cost of the product, as shown in fig. 7 and 8, the first power assembly 3 includes a handle 31, a push block 32, and a biasing lever 33; the handle 31 is fixedly connected with the flexible pipe body 11 and is provided with an inner cavity and a sliding groove 31a penetrating through the inner side and the outer side of the cavity; the pushing block 32 penetrates the sliding groove 31a and slides along the sliding groove 31a, and can stop at a required position by friction force generated by extrusion of the side wall of the sliding groove 31a; the part of the push block 32 located in the inner cavity of the handle 31 is connected with one end of a force application rod 33, and the other end of the force application rod 33 is connected with the support framework 12.

The first power assembly 3 with the structure has lower cost, is particularly suitable for disposable medical products, and can adjust the position of the supporting framework 12 relative to the accommodating part 11a by directly applying force to the pushing block 32 in the using process; the positioning of the push block 32 by the pressing force of the side wall of the sliding groove 31a is simple and convenient, and the adjustment of the friction force can be realized by controlling the size.

Wherein, the pushing block 32 is located at the outer part of the handle 31, extends to the two sides of the width direction of the sliding groove 31a and is attached to the outer wall of the handle 31; therefore, the device can be more stable in the stress process, and can be guided by the outer wall of the handle 31 on one hand and increase the stress area on the other hand.

As a preference to the above-described embodiment, the second power assembly 4 includes a sliding sleeve 41, a lead screw nut 42, and a lock block 43; the sliding sleeve 41 is sleeved outside the flexible pipe body 11, one end of the sliding sleeve 41 is provided with an open end for the flexible shell 21 to enter, the inner wall of the open end is attached to the outer wall of the flexible shell 21, and the other end of the sliding sleeve 41 extends to the flexible pipe body 11 along the radial direction to form a first convex edge; the lead screw nut 42 penetrates through the position of the first convex edge and is attached to the penetrating position, and a second convex edge is arranged at the end part of the lead screw nut 42; the locking block 43 is sleeved outside the screw nut 42 and forms a space with the second convex edge for limiting the first convex edge in the length direction of the flexible pipe body 11 together; the wire 22 is fixedly connected with the sliding sleeve 41, and the screw nut 42 is in threaded connection with a threaded section outside the flexible pipe body 11.

As shown in fig. 9 and 10, the second power assembly 4 is shown in an optimized manner, and in the working process, when the supporting framework 12 is in a divergent state and the flexible cover 13 covers the umbrella-shaped structure, the lead screw nut 42 can be rotated relative to the flexible pipe body 11, and in the process, the limiting space between the lead screw nut 42 and the locking block 43 can rotate around the axis of the flexible pipe body 11 and perform linear motion; in the above process, since the sliding sleeve 41 is connected with the wire 22, the rotation is limited, and of course, the rotation limitation can also be controlled by the external force of the force applying person, so that the sliding sleeve 41 is forced to perform linear motion by the limitation of the locking block 43 and the second convex edge on the first convex edge, thereby realizing the adjustment of the position of the wire 22; in the above-described process, the purpose is to make the sliding sleeve 41 perform linear movement in the axial direction of the flexible pipe body 11, regardless of the rotation restriction of the wire 22 or the rotation restriction of the external force.

In the specific implementation process, the lead screw nut 42 can be selected to be close to the handle 31 as much as possible, so that the operation is convenient; of course, in the above process, the positional relationship between the flexible casing 21 and the sliding sleeve 41 needs to ensure that the sliding sleeve 41 has enough moving space relative to the flexible casing 21, so as to ensure the moving distance of the wire, and the bonding manner between the two is also the key to realize sealing. In order to facilitate the installation of the wire 22, an installation surface perpendicular to the axis of the flexible pipe body 11 may be provided on the inner wall of the sliding sleeve 41.

For processing purposes, the flexible housing 21 includes a first section and a second section; the first section is provided with a guide part 21a and a constant section pipe body part sleeved outside the flexible pipe body 11; one end of the second section is connected with the pipe body part with the same cross section, and the other end is connected with the second power assembly 4, so that the installation difficulty of the metal wire 22 and the processing difficulty of parts can be reduced.

As a preferable example of the above embodiment, as shown in fig. 11, a guide hole 21b is provided on the inner wall of the guide portion 21a, and the guide hole 21b is close to the root of the guide portion 21 a; the wire 22 penetrates the guide hole 21b; so that the wire 22 is guided, wherein the guide hole 21b needs to be provided only at the root position, because at the end of the guide portion 21a, a certain space is required to accommodate the natural deformation of the end of the wire 22, and of course, when the wire 22 is retracted inside the guide portion 21a, appropriate deformation may occur due to the coaction of the inner wall of the guide portion 21a and the outer wall of the accommodating portion 11a, contributing to the reduction of the device volume.

As preferable of the above embodiment, the cross sections of the wire 22 and the guide hole 21b are both regular quadrangles; so as to avoid the rotation of the wire 22 and change the originally required bending direction, of course, the through part 13a on the flexible cover 13 needs to be matched with the cross-sectional shape of the wire 22 to change the width thereof; the above arrangement of the guide holes 21b can also make the wire 22 more accurately penetrate the flexible cover 13.

As an optimized mode that the guide part 21a and the accommodating part 11a are coaxial and are relatively fixedly arranged, the constant-section pipe body part of the first section is sleeved outside the second section, through holes 21c which are in one-to-one correspondence with the metal wires 22 are formed in the inner wall of the second section, and the metal wires 22 penetrate through the through holes 21c; at the position where the through hole 21c is located, the inner wall of the second section is fixedly bonded to the outer wall of the flexible pipe body 11.

As shown in fig. 12, there is shown a position of adhesion fixation where the wire 22 is protected by the through hole 21c, so that smooth transition between different states can be ensured without being affected by the adhesive colloid, and at the same time, the arrangement of the through hole 21c can further realize guiding of the wire 22.

The above-described bonding action may be accomplished by first completing the attachment of the wire 22 to the first and second segments prior to the bonding, while maintaining the first and second segments in a spaced apart relationship, during which time the spacing between the first and second segments is allowed due to the flexibility of the wire 22. When the above-mentioned bonding operation is completed, the first section and the second section may be connected by bonding, and of course, since the connection between the two sections may be implemented externally, or an additional fixing structure may be also used, any connection mode is within the scope of the present invention, where it is convenient to bond and fix the first section and the second section.

the pickup cover body assembly 1 and the gathering fork assembly 2 enter the respiratory tract through the intervention means respectively through the corresponding gathering state and the corresponding storage state;

when the accommodating part 11a and the guide part 21a reach the position of the foreign matter, the flexible cover 13 of the pickup cover assembly 1 obtains an umbrella-shaped structure in a divergent state by applying force to the first power assembly 3, so that a space for accommodating the foreign matter is formed;

the end of the wire 22 is inserted into the foreign matter through the through portion 13a penetrating the flexible cover 13 by applying a force to the second power unit 4 and the bent state of the wire itself;

by applying force to the first power assembly 3 again, the supporting framework 12 drives the flexible cover 13 to retract inwards by a proper length, and in the process, the extrusion force is applied to the metal wires 22 through the edge of the through part 13a, so that all the metal wires 22 are bent towards the inner part of the guide part 21 a;

at the same time, the supporting frame 12 is properly gathered by the edges of the receiving portion 11 a.

The specific process of the working method is specifically described in the above embodiments, and will not be described herein.

In the specific implementation process, in order to ensure that the metal wire 22 is smoothly inserted into the foreign matters, the cross-sectional dimension of the metal wire needs to be reduced as much as possible, and the strength of the metal wire in the use process can be effectively ensured through the arrangement of the guide structures; of course, in order to make the wire 22 pass through the through-hole 13a more smoothly, the width of the through-hole 13a can be increased appropriately, and the probability of foreign matter leaking from the through-hole 13a is small due to the wire 22.

The foregoing has outlined and described the basic principles, features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The device is characterized by comprising a picking cover body assembly, a gathering fork assembly, a first power assembly and a second power assembly;

the second power assembly comprises a sliding sleeve, a screw nut and a locking block;

the metal wire is fixedly connected with the sliding sleeve, and the screw rod nut is in threaded connection with a threaded section outside the flexible pipe body;

2. The intra-airway foreign body pickup apparatus according to claim 1, wherein the first power assembly includes a handle, a push block, and a force application lever;

3. The intra-airway foreign body pickup device according to claim 2, wherein the portion of the push block located outside the handle extends to both sides in the width direction of the slide groove and is bonded to the outer wall of the handle.

4. The intra-airway foreign body pickup device according to claim 1, wherein the flexible housing includes a first section and a second section;

5. The intra-airway foreign body pickup apparatus according to claim 4, wherein a guide hole is provided on an inner wall of the guide portion, and the guide hole is close to a root portion of the guide portion; the metal wire penetrates through the guide hole.

6. The intra-airway foreign body pickup apparatus according to claim 5, wherein the cross sections of the wire and the guide hole are each regular quadrangles.

7. The device according to claim 4, wherein the first section of the uniform section tube is partially sleeved outside the second section, and through holes corresponding to the wires one by one are formed in the inner wall of the second section, and the wires penetrate through the through holes;

8. The intra-airway foreign body pickup device according to claim 7, wherein the first section and the second section are adhesively fixed.