CN209808487U - Percutaneous lung puncture auxiliary trocar - Google Patents
Percutaneous lung puncture auxiliary trocar Download PDFInfo
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- CN209808487U CN209808487U CN201920436110.0U CN201920436110U CN209808487U CN 209808487 U CN209808487 U CN 209808487U CN 201920436110 U CN201920436110 U CN 201920436110U CN 209808487 U CN209808487 U CN 209808487U
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Abstract
The utility model discloses a percutaneous lung puncture auxiliary trocar, which comprises a stylet, a jacket tube and an injection tube, wherein the stylet comprises a cylindrical stylet main body with the tail end becoming a needle point, and a stylet top cap positioned at the top end of the stylet main body; the jacket sleeve comprises an outer pipe, an inner pipe, a top ring and a tail ring; the jacket pipe is derived from the upper part of the outer pipe in an inclined upward direction and is communicated with the outer cavity, wherein a drainage hole is hollowed at the lower part of the inner pipe or the outer pipe. The utility model discloses can be in puncture operation to the synchronous drug delivery of lung tissue, avoid puncturing repeatedly, reduce pneumothorax and the risk of bleeding.
Description
Technical Field
The utility model belongs to the field of medical equipment, a supplementary trocar of percutaneous lung puncture is related to, concretely relates to supplementary trocar of CT guide percutaneous lung puncture for chronic obstructive pulmonary disease patient.
Background
The percutaneous lung tissue puncture is widely applied to diagnosis and treatment of lung tissue and tissue lesions of peripheral pleura, chest wall and the like, and a biopsy needle is placed in the percutaneous lung tissue puncture way to carry out accurate fixed-point biopsy on a lesion part, so that the purpose of determining the nature of lesion is realized; meanwhile, the utility model can be used for local treatment of the lesion part by means of percutaneous puncture. The common methods for percutaneous lung tissue puncture comprise fluoroscopic silver screen guidance, B-type ultrasonic guidance, CT guidance and the like, wherein the percutaneous lung tissue puncture under the CT guidance has the advantages of good display of the size, the position and the internal condition of a focus, good identification of peripheral blood vessels and the like and is widely applied clinically.
Patients with Chronic Obstructive Pulmonary Disease (COPD) are often associated with lung tumors, lung-specific infections, and other related diseases, and such patients need to be diagnosed and treated by skin-lung tissue puncture. COPD patients have pathophysiological characteristics of pulmonary hypofunction, excessive ventilation, emphysema and the like, the percutaneous lung puncture operation time under the guidance of CT is usually longer than that of other lung puncture methods, the puncture needle needs to be fixed outside the body of the patient for a longer time, and pneumothorax, intrapulmonary hemorrhage and other conditions are easily caused when the puncture needle is used for the COPD patients under the guidance of CT.
Chinese patent CN206491852 adds the medical absorbable cock body into the pjncture needle inner wall, reaches the effect of preventing pneumothorax and internal hemorrhage of lung through releasing the medical cock body, but this patent pjncture needle only single puncture is used, can't be applicable to the scene that needs to obtain the interior tissue of polylith lung, also can't carry out the operation of dosing to focus tissue part, simultaneously because pjncture needle body weight is heavier, needs medical staff to last meticulous control, probably increases medical staff's radiation injury risk. Chinese patent CN102697540, chinese patent CN204446042, chinese patent CN204995554, etc. adopt a trocar method, and the positioning, fixing and pre-puncture of the trocar are performed to achieve the purposes of accurate positioning of puncture biopsy, reducing radiation injury of medical staff, avoiding repeated puncture, etc., but many cannula patents cannot properly treat the puncture wound due to the increase of the size of the puncture wound caused by adding the cannula, and are easy to increase risks of pneumothorax, intrapulmonary hemorrhage, etc. in the using process.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the percutaneous lung puncture auxiliary trocar in the prior art and provide a percutaneous lung puncture auxiliary means which can synchronously feed medicine to lung tissues in a puncture operation and avoid repeated puncture, a lung puncture auxiliary trocar with a brand-new structure is designed. Particularly, the utility model comprises the following technical scheme.
A percutaneous lung puncture auxiliary trocar comprises a trocar core, a jacket sleeve and an injection tube. Wherein the nook closing member includes: the needle core main body is cylindrical as a whole, the tail end of the needle core main body becomes a needle point, particularly the tail end of the needle core main body becomes the needle point towards one side, and the needle core top cap is positioned at the top end of the needle core main body and has the diameter larger than the diameter of the needle core main body and the inner diameter of the jacket pipe, and can ensure that the needle core cannot fall into the inner cavity. The jacket sleeve comprises: the outer tube, the inner tube, the top ring which is positioned at the top ends of the outer tube and the inner tube and seals the cavity (namely the outer cavity or the sublumen) between the two, and the tail ring which is positioned at the tail ends of the outer tube and the inner tube and seals the cavity (namely the outer cavity or the sublumen) between the two, wherein
The space defined by the inner wall of the inner tube is referred to as the inner cavity (or main lumen) for receiving the core body and for passing the biopsy needle.
The injection tube is derived from the upper part of the outer tube of the jacketed tube in an inclined upward direction and is communicated with the outer cavity,
the inner diameter of the top ring is the same as that of the inner tube, and the outer diameter of the top ring is larger than that of the outer tube, so that the top ring is used for supporting the needle core top cap; the inner diameter of the tail ring is the same as that of the inner pipe, the outer diameter of the tail ring is the same as that of the outer pipe,
the lower part of the inner pipe or the outer pipe is provided with more than one, preferably more than two, more than three, more than four, more than five, more than six, more than seven and more than eight drainage holes. These holes may be arranged symmetrically or asymmetrically along the axis of the inner or outer tube.
Preferably, the lower part of the inner tube is provided with the drainage holes.
In one embodiment, the outer diameter of the syringe is smaller than the outer diameter of the outer tube, and may even be smaller than the outer diameter of the inner tube or the diameter of the stylet body.
Preferably, the injection port of the injection tube may be a one-way rubber plug for connecting with a syringe, so as to effectively prevent ambient air from entering the injection tube.
The substance injected from the syringe may be a liquid drug such as a tissue adhesive; it may also be a gaseous drug for therapeutic or diagnostic purposes, enabling simultaneous administration of the drug to lung tissue, especially to lung tissue of COPD patients, in a puncture procedure.
When a fluid, such as a tissue adhesive, is injected into the syringe, the fluid flows under pressure or gravity within the outer chamber to the lower portion of the jacket sleeve and out of the leak into the lung tissue at the puncture site.
In a preferred embodiment, the injection port of the syringe is lower than the top ring of the jacket tube, so as to avoid affecting the lung puncture operation.
In one embodiment, the vent hole is circular, and may have other shapes as long as it can smoothly release the liquid drug such as a tissue adhesive to the lung tissue at the puncture site.
The needle core main body can be made of metal such as medical stainless steel.
The diameter and length of the needle core, the clamping sleeve and the syringe can be made into corresponding specifications or models according to the sizes of different biopsy needles.
Preferably, the material of the needle core top cap is the same as that of the needle core main body, and the needle core top cap is made of metal such as medical stainless steel; or may be different, such as plastic.
The cross section of the needle core top cap can be circular or polygonal. Preferably, the size of the needle core top cap is larger than that of the top ring, so that the needle core can be conveniently drawn and inserted.
The lumen of the inner tube is adapted to receive the core body and allow the needle tip to protrude, for example, the length of the protruding needle tip may be about 0.5 cm.
In a preferred embodiment, a length scale is marked on the outside of the jacket sleeve to indicate the depth of penetration (and may be locked with a rubber ring after the core needle or biopsy needle has been inserted into the lung).
Preferably, the diameter of the lumen (i.e., the inner diameter of the inner tube) is matched to, i.e., substantially the same as or slightly larger than, the outer diameter of the core to prevent external air from entering the lungs through the gap between the inner tube and the core during surgery or to prevent pulmonary blood from leaking out.
Preferably, the materials of the stylet, the cannula and the syringe may all be metals such as medical grade stainless steel.
The utility model discloses a supplementary trocar of percutaneous lung puncture can realize giving medicine to the lung tissue in step in the puncture operation, has avoided puncturing repeatedly, has reduced the risk that takes place pneumothorax, internal hemorrhage of lung etc., has still reduced medical staff's radioactive damage, is particularly suitable for COPD patient's CT guide percutaneous lung puncture operation, therefore possesses wide popularization and application prospect.
Drawings
Fig. 1 is a schematic structural view of an embodiment of a trocar for assisting percutaneous lung puncture according to the present invention.
Figure 2 is a schematic view of the construction of the core shown in figure 1.
Fig. 3 is a schematic structural view of one of the jacket sleeve embodiments shown in fig. 1.
Detailed Description
The technical solution of the present invention will be described below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments and not all embodiments of the present application; and the structures shown in the drawings are merely schematic and do not represent actual objects.
It will be appreciated by those skilled in the art that the use of the auxiliary trocar of the present invention allows not only the injection of liquid drugs such as tissue adhesives to the lung puncture site, but also the injection of gases for therapeutic or diagnostic purposes. The puncture assisting device can be used for puncture assistance of not only lung but also lung peripheral tissues and even other tissues and organs.
For simplicity of description, the term "jacketed pipe" is sometimes referred to herein simply as "pipe", which means the same meaning and may be used interchangeably.
Similarly, the term "lumen" may be referred to simply as "primary lumen", which are intended to have the same meaning and may be used interchangeably, and refer to a cylindrical space defined primarily by the inner wall of the inner tube; the term "outer lumen" may be referred to simply as "secondary lumen" and they are intended to have the same meaning and all refer to a circular tubular space between the outer and inner tubes and enclosed by the top and tail rings, which may be used interchangeably.
Herein, the term "tip" means a positional relationship in a direction from the core tip cap to the needle tip or in a direction upstream from the jacket sleeve top ring to the tail ring, but does not mean that it must be oriented in a certain fixed direction in an actual mounting operation, only in order to show a positional relationship or a connection relationship between the respective components. Similarly, the terms "tail (lower, terminal)", "front", "rear", etc. do not constitute an absolute spatial relationship limitation, but merely a concept of relative position, as will be understood by those skilled in the art.
Referring to fig. 1 to 3, the percutaneous lung puncture assisting trocar 1 of the present invention mainly includes a trocar core 2, a cannula holder 2 and an injection tube 4, which are described below.
Needle core 2
As shown in fig. 2, the core 2 includes: a core body 21 which is cylindrical as a whole and has a tip 22 at the end, in particular a tip 22 at the end facing to one side, and a core cap 23 which is located at the top end of the core body 21 and has a diameter larger than the diameter of the core body 21 and the inner diameter of the jacket tube 3, the core cap 23 ensuring that the core 2 does not fall into the cavity 35.
The material of the needle core main body 21 can be metal such as medical stainless steel. The material of the needle core top cap 23 can be the same as that of the needle core main body 21, and is metal such as medical stainless steel; or may be different, such as plastic.
The core tip cap 23 may be circular or polygonal in cross-section. Preferably, the size of the core top cap 23 may be larger than the size of the top ring 33 to facilitate the withdrawal and insertion of the core 2.
Jacketed pipe 3
As shown in fig. 1 and 3, the jacket sleeve 3 includes: the outer tube 31, the inner tube 32, the top ring 33 which is positioned at the top end of the outer tube 31 and the inner tube 32 and closes the cavity between the two, namely the outer cavity 35 (or the secondary cavity 35), and the tail ring 34 which is positioned at the tail end of the outer tube 31 and the inner tube 32 and closes the cavity between the two, namely the outer cavity 35 (or the secondary cavity 35).
The space defined by the inner wall of inner tube 32 is referred to as a lumen 36 (or main lumen 36) for receiving the core body 21 and for passing a biopsy needle therethrough.
The inner diameter of the top ring 33 is preferably the same as the inner diameter of the inner tube 32, and the outer diameter of the top ring 33 is larger than the outer diameter of the outer tube 31, thereby serving to support the core top cap 23; the inner diameter of the tail ring 34 is the same as the inner diameter of the inner tube 32, and the outer diameter of the tail ring 34 is the same as the outer diameter of the outer tube 31.
Preferably, a length scale (not shown) is marked on the outside of the jacket sleeve 3, i.e., the outer tube 31, for displaying the puncture depth, and the scale may be locked with a rubber ring (not shown) after the core needle 2 or the biopsy needle (not shown) has punctured into the lung.
The lumen 36 of the inner tube 32 is adapted to receive the core body 21 and allow the needle tip 22 to protrude, for example, the length of the protruding needle tip 22 may be about 0.5 cm.
The diameter of the lumen 36 (i.e., the inner diameter of the inner tube 32) is preferably matched to the outer diameter of the stylet body 21, i.e., is approximately the same or slightly larger than the outer diameter of the stylet body 21, preventing external air from entering the lungs through the gap between the inner tube 32 and the stylet body 21 during surgery or blood from leaking out of the lungs.
More than one, preferably more than two, more than three, more than four, more than five, more than six, more than seven, more than eight drainage holes 37 are hollowed out at the lower part of the inner tube 32 or the outer tube 31. These drain holes 37 may be provided symmetrically or asymmetrically along the axis of the inner tube 32 or the outer tube 31. More preferably, the inner tube 32 is provided with these drain holes 37 at its lower portion.
The vent 37 may be circular or may have other shapes as long as it can smoothly release the liquid medicine such as a tissue adhesive to the lung tissue at the puncture site.
Injection tube 4
As shown in fig. 1 and 3, the injection tube 4 is a conduit which is derived obliquely upward from the upper portion of the outer tube 31 of the jacketed pipe 3 and communicates with the outer chamber 35. For example, the injection tube 4 may be hermetically welded to the outer tube 31 so as to be integrated with the outer tube 31.
The outer diameter of the injection tube 4 is smaller than the outer diameter of the outer tube 31, and may be even smaller than the outer diameter of the inner tube 32 or the diameter of the core body 21, as long as the purpose of smoothly injecting a medicine such as a tissue adhesive can be achieved.
Preferably, the injection port 41 of the injection tube 4 has a height lower than the height of the jacket tube top ring 33 in order to avoid interfering with the lung puncture procedure.
The injection port 41 of the injection tube 4 may be a one-way rubber stopper (not shown) for connecting a syringe (not shown), effectively preventing ambient air from entering the injection tube 4.
The substance injected from the syringe tube 4 may be a liquid drug such as a tissue adhesive; it may also be a gaseous drug for therapeutic or diagnostic purposes, enabling simultaneous administration of the drug to lung tissue, especially to lung tissue of COPD patients, in a puncture procedure.
When a liquid, such as a tissue adhesive, is injected into the syringe tube 4, the liquid flows under pressure or gravity within the outer lumen toward the lower portion of the jacket tube and out of the drain hole 37 into the lung tissue at the puncture site.
The diameter and length of the core 2, the jacket sleeve 3 and the syringe 4 can be made into corresponding specifications or models according to the sizes of different biopsy needles. And the material of the stylet 2, the jacket sleeve 3 and the syringe 4 may all be metal such as medical stainless steel.
Use examples
When using the utility model discloses a supplementary trocar 1 of percutaneous lung puncture carries out the lung puncture operation, after the focus is fixed a position under the CT guide, select best point of puncture and puncture angle, puncture to focus tissue department after putting into jacket pipe 3's inner chamber 36 with nook closing member 21, carry out CT once more and confirm the accurate back in puncture position, put into the puncture biopsy needle rapidly after extracting nook closing member main part 21 and carry out the lung tissue biopsy, when withdrawing from the biopsy needle after the biopsy is accomplished, pour into tissue adhesive in injection tube 4, prevent the emergence of pneumothorax and intrapulmonary internal hemorrhage, withdraw from behind the biopsy needle, reinsert partial nook closing member main part 21 again, prevent that the air from getting into lung and bloody water outflow, continue to pour into tissue adhesive through injection tube 4 when withdrawing from whole trocar 1, thereby improve operation quality and success rate.
The percutaneous lung puncture assisting trocar provided by the application is described in detail, and the principle and the implementation mode of the application are explained by applying specific examples, and the description of the examples is only used for helping to understand the method and the inventive concept of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A percutaneous lung puncture auxiliary trocar is characterized by comprising a trocar core, a jacket sleeve and an injection tube, wherein the trocar core comprises: the needle core main body is cylindrical as a whole, the tail end of the needle core main body becomes a needle point, and the needle core top cap is positioned at the top end of the needle core main body and has a diameter larger than the diameter of the needle core main body and the inner diameter of the jacket pipe; the jacket sleeve comprises: an outer tube, an inner tube, a top ring which is positioned at the top ends of the outer tube and the inner tube and closes a cavity between the top ring and the inner tube, namely an outer cavity, and a tail ring which is positioned at the tail ends of the outer tube and the inner tube and closes the outer cavity, wherein
The injection tube is derived from the upper part of the outer tube of the jacketed tube in the oblique upward direction and is communicated with the outer cavity,
the inner diameter of the top ring is the same as that of the inner pipe, and the outer diameter of the top ring is larger than that of the outer pipe; the inner diameter of the tail ring is the same as that of the inner pipe, the outer diameter of the tail ring is the same as that of the outer pipe,
more than one drainage hole is hollowed at the lower part of the inner pipe or the outer pipe.
2. The percutaneous lung puncture assisting trocar according to claim 1, wherein the drainage holes of the lower portion of the inner tube or the outer tube are symmetrically arranged along an axis.
3. The percutaneous lung puncture assisted trocar of claim 1, wherein the drainage hole is circular.
4. The percutaneous lung puncture assisted trocar of claim 1, wherein an outer diameter of the injection tube is smaller than an outer diameter of the outer tube.
5. The percutaneous lung puncture assisting trocar according to claim 1, wherein the injection port of the injection tube is a one-way rubber plug for connecting a syringe.
6. The percutaneous lung puncture assisted trocar according to claim 1, wherein a height of a sample inlet of the injection tube is lower than a height of the jacket tube top ring.
7. The percutaneous lung puncture auxiliary trocar according to claim 1, wherein the material of the trocar core main body is metal.
8. The percutaneous lung puncture assisted trocar of claim 1, wherein the inner lumen of the inner tube is configured to receive a core body and allow a needle tip to penetrate therethrough.
9. The percutaneous lung puncture assisting trocar according to claim 1, wherein a length scale is marked on the outer side of the jacket tube for displaying the puncture depth.
10. The percutaneous lung puncture assisting trocar according to claim 1, wherein an inner diameter of the inner tube matches an outer diameter of the trocar core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920436110.0U CN209808487U (en) | 2019-04-02 | 2019-04-02 | Percutaneous lung puncture auxiliary trocar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920436110.0U CN209808487U (en) | 2019-04-02 | 2019-04-02 | Percutaneous lung puncture auxiliary trocar |
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| CN209808487U true CN209808487U (en) | 2019-12-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112168315A (en) * | 2020-10-20 | 2021-01-05 | 太平洋康泰科学仪器（济南）有限公司 | Puncture ovum taking device |
-
2019
- 2019-04-02 CN CN201920436110.0U patent/CN209808487U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112168315A (en) * | 2020-10-20 | 2021-01-05 | 太平洋康泰科学仪器（济南）有限公司 | Puncture ovum taking device |
| CN112168315B (en) * | 2020-10-20 | 2023-09-08 | 太平洋康泰科学仪器（济南）有限公司 | Puncture ovum device of getting |
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