CN108324332A - Suction integration is through scope aspiration biopsy instrument - Google Patents

Abstract

The invention discloses suction integrations through scope aspiration biopsy instrument, its structure includes suction unit, limiting component, outer tube, outer tube handle, needle tubing, syringe handle and interior core filaments, the needle tubing is placed in outer tube bore, needle tubing is made of needle point section and needle body section, the needle point section is pierced by distal outer tube, needle body section is pierced by proximal outer tube and is connect with syringe handle, and the proximal end of syringe handle is connect with suction unit；The proximal end of the limiting component and outer tube handle is rotatablely connected, and the syringe handle is equipped with sliding block, and the sliding block is slidably connected with limiting component.The movable detecting apparatus can meet the needs of any endoscopic ultrasonography mediation of alimentary canal and tracheae, it may also be used for the pincers road through non-endoscopic ultrasonography realizes that direct-view is lower and punctures depth biopsy, drawing liquid etc., and high degree simplifies puncture procedure, improves processing safety.

Description

Suction-integrated transendoscopic biopsy instrument

technical field

The invention relates to a device, in particular to a suction-integrated endoscopic puncture biopsy device.

Background technique

Endoscopic puncture technology is a minimally invasive diagnosis and treatment technology completed through endoscopic working channels. Although it belongs to advanced endoscopic technology, it has been developed maturely all over the world in the past 30 years. The technology is to obtain diagnostic specimens of cells, tissues, and fluids through puncture, and can also perform puncture and aspiration therapy, and can also achieve the purpose of injection therapy. The endoscopes currently used for puncture generally include ultrasound endoscope and non-ultrasound endoscope (i.e. ordinary endoscope) puncture, among which, according to the difference in the application and design of different organs, it specifically involves transtracheal puncture, transtracheal puncture, etc. Ultrasonic endoscopic puncture, transdigestive endoscopic puncture, transgastrointestinal ultrasonographic puncture, etc.

The common feature of the existing biopsy needle products is that the puncture depth cannot be selected during the cutting operation, which greatly limits the application range of the biopsy needle products, especially the TBNA biopsy needle, the needle body has only one length of extension, making it There is no clinical choice, which makes it impossible to perform the operation, or the puncture is too deep and the operation fails.

Contents of the invention

The purpose of the present invention is to provide a suction-integrated transendoscopic puncture biopsy instrument, which can meet the needs of any endoscopic ultrasound-mediated alimentary canal and trachea, and can also be used for non-ultrasonic endoscopic forceps to achieve direct biopsy. Under visual puncture for deep biopsy and fluid extraction, the puncture operation is greatly simplified and the operation safety is improved.

The technical solution adopted by the present invention to solve the technical problem is: suction integrated endoscopic puncture biopsy instrument, its structure includes suction device, stopper, outer tube, outer tube handle, needle tube, needle tube handle and inner core wire , the needle tube is placed in the inner cavity of the outer tube, and the needle tube is composed of a needle tip section and a needle body section, the needle tip section passes through the distal end of the outer tube, and the needle body section passes through the proximal end of the outer tube to connect with the needle handle, and the proximal end of the needle handle It is connected with the suction device; the limiting part is rotationally connected with the proximal end of the handle of the outer tube, and a slider is provided on the handle of the needle tube, and the sliding block is slidably connected with the limiting part.

Further, the limiting part is rotationally connected with the proximal end of the outer tube handle through the rotation hole, the limiting part is provided with a puncture groove of 15 mm and a puncture groove of 20 mm, and the slider on the handle of the needle tube is slidably connected with the puncture groove of 15 mm or puncture groove of 20 mm; The side parts of the 15mm puncture groove and the 20mm puncture groove are respectively provided with corresponding marks.

Further, the suction device is a negative pressure device, which is composed of a handle, a positioning block, a positioning groove and a piston.

Further, the cross-section of the inner core wire is circular, the inner core wire passes through the body of the needle tube, an axial cavity is left between the inner core wire and the inner wall of the needle tube, and the distal end of the inner core wire exceeds the distance between the distal end of the needle tip. Outside, the proximal end is connected to the handle of the negative pressure device; the distal end of the inner core wire is a round head, a uniform slope or multiple slopes.

Further, the needle point of the needle tube is a sharp uniform bevel needle point, a semicircular needle point or an arc-shaped needle point.

Further, two puncture grooves of 15 mm and two puncture grooves of 20 mm are provided on the limiting member, and the included angle between adjacent puncture grooves is 90 degrees.

Further, the needle tip section of the needle tube is roughened or treated irregularly.

Further, the diameter of the needle tube is 17g-25g, and g is the abbreviation of the unit gauge.

The beneficial effects of the present invention are:

The puncture effect of this biopsy instrument is ideal, especially suitable for obtaining long tissue samples; the hardness of the needle tube body section of the puncture biopsy needle is much smaller than that of other puncture needle designs of the same diameter, which makes the needle tube operate with resistance when it flexes with the forceps At the same time, the length of the needle can be selected according to the required puncture depth during the operation; during the operation, the operator can freely choose to perform tissue biopsy or cell puncture aspiration. It greatly simplifies the puncture operation and improves the safety of the operation. It is not only suitable for endoscopic ultrasonography of the digestive tract, but also suitable for endoscopic ultrasonography of the trachea, and is also suitable for puncture under conventional non-ultrasound endoscopy.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a state diagram of the needle tube handle sliding out of the limit part;

Fig. 3 is a cross-sectional view of a limiting part;

Fig. 4 is a left view of the limiting part;

5 is a schematic diagram of the first form of the needle tip of the needle tube;

Fig. 6 is a schematic diagram of the second form of the needle tip of the needle tube;

Fig. 7 is a schematic diagram of the third form of the needle tip of the needle tube.

In the picture:

1-Negative pressure device, 2-Limiting parts, 3-Outer tube handle, 4-Outer tube, 5-Needle tube, 6-Inner core wire, 7-Handle, 8-Positioning block, 9-Positioning groove, 10- Piston, 11-needle tube handle, 12-15mm puncture groove, 13-20mm puncture groove, 14-rotary hole, 15-irregular surface, 16-beveled needle point, 17-rounded inner core wire, 18-semicircular needle point, 19- Inclined inner core wire, 20-curved needle tip, 21 slider.

Detailed ways

Referring to the accompanying drawings, the suction-integrated endoscopic puncture biopsy instrument of the present invention will be described in detail below.

As shown in Fig. 1 and Fig. 2, the suction integrated endoscopic puncture biopsy instrument of the present invention has a structure including a suction device, a stopper 2, an outer tube 4, an outer tube handle 3, a needle tube 5, and a needle tube handle 11 And the inner core wire 6, the needle tube 5 is placed in the inner cavity of the outer tube, the needle tube 5 is composed of a needle point segment and a needle body segment, the needle point segment passes through the outer tube 4 distal end, and the needle body segment passes through the outer tube proximal end and the needle tube The handle is connected, and the proximal end of the needle tube handle is connected with the suction device; the proximal end of the limiting part 2 is rotationally connected with the outer tube handle 3, and the needle tube handle 11 is provided with a slider 21, and the slider 21 is connected with the limiter Bit part 2 slide connection. The material of the outer tube is polyetheretherketone; the length of the outer tube can be processed into different preferred lengths according to different needs for bronchoscopes, digestive tract endoscopes and the like. The function of the outer tube is to form the needle tube and its internal instruments to pass safely and smoothly in the clamp channel.

The diameter of the needle tube is 17g-25g, where g is the abbreviation of the unit gauge.

As shown in Figure 3, the stopper 2 is rotationally connected to the proximal end of the outer tube handle 3 through the rotation hole 14, the stopper 2 is provided with a 15mm puncture groove 12 and a 20mm puncture groove 13, and the slider on the needle tube handle 11 21 is slidingly connected with the 15mm puncture groove or the 20mm puncture groove; the sides of the 15mm puncture groove and the 20mm puncture groove are respectively provided with corresponding marks. The marking can facilitate the operator to select different puncture depths when turning the limiting part,

The suction device is a negative pressure device 1, which is composed of a handle 7, a positioning block 8, a positioning groove 9 and a piston 10.

The cross section of the inner core wire 6 is circular, the inner core wire passes through the body of the needle tube, an axial cavity is left between the inner core wire and the inner wall of the needle tube, and the distal end of the inner core wire exceeds the distal end of the needle tip , the proximal end is connected to the handle 7 of the negative pressure device 1 that controls the movement of the inner core wire; the far end of the inner core wire is a rounded head as shown in Figure 7, that is, the rounded inner core wire 17, and the uniform slope is the inclined plane inner core Wire 19 or more beveled.

The needle point of the needle tube 5 is a sharp uniform bevel needle point 16 , a semicircular needle point 18 or an arc-shaped needle point 20 .

As shown in FIG. 4 , two puncture grooves of 15 mm and two puncture grooves of 20 mm are provided on the limiting component, and the included angle between adjacent puncture grooves is 90 degrees. Rotate the stopper to select the corresponding depth, and slide the slider into the corresponding puncture groove to puncture.

The rough surface or irregular surface 15 of the needle tip section of the needle tube is processed so that it can be visualized under ultrasound. The needle tip segment functions to penetrate and cut tissue. The proximal end of the needle tube is open, and the proximal end of the needle tube is fixedly connected with the needle tube operating handle. The needle tube can be bent with the bending of the tongs in the tongs, and can move back and forth, and its material is stainless steel or nickel-titanium alloy.

As shown in Figure 5, the needle point is an arc-shaped needle point, and the end of the inner core wire is a uniform bevel, especially for hard tissue, which is easy to puncture and the arc is easy to cut.

As shown in Figure 6, the needle point is a semicircular needle point, and the two needle points for soft tissue can grasp the soft tissue without slipping away, and cooperate with the inner core wire with a sharp and uniform slope at the end to assist puncture. Suitable for penetrating soft tissue.

Since the shape of the needle point in Fig. 4 and Fig. 5 is arc and semicircle, the needle point of these two shapes is not easy to puncture, so a sharp inner core wire with a uniform slope is used to assist puncture.

The negative pressure device performs suction as applying negative pressure, and is connected with the needle tube handle 11 to form a negative pressure channel.

The outer tube handle 3 is connected with the outer tube 4 to achieve the fixing of the outer tube 4 .

The needle tube handle 11 is connected with the needle tube 5 to fix the needle tube 5 and control the movement of the needle tube 5 .

The piston 10 in the negative pressure device 1 is connected with the inner core wire 6 to fix the inner core wire 6, and the movement of the inner core wire 6 is controlled by the movement of the pull handle 7.

Example:

Tracheal lymph node biopsy guided by endotracheal endoscopy:

(1) The specifications of the puncture biopsy needle instrument are: the effective length of the outer tube 4 is 120 cm, the diameter of the needle tube 5 is 20 g, and the diameter of the inner core wire 6 is 24 g.

(2) According to the distribution map of tracheal lymph nodes, after the endoscope is inserted to the target puncture site, the outer tube 4 is inserted through the forceps channel to make it visible under direct vision of the endoscope.

(3) Select the required 15mm puncture groove 12 or 20mm puncture groove 13 to push the needle tube handle 11 to push the needle tube 5 out of the outer tube 4 and fix it, pinch the outer tube 4 to penetrate the needle tube 5 into the target tissue, and pull the negative pressure device 2 to pull The handle 7 is fixed, and the outer tube 5 is pinched to move back and forth, so that the needle tube 5 is inserted into the target tissue about 20 times, and the large-volume tissue sample extraction is generally completed.

(4) Pull the needle tube handle 11 to put the needle tube 5 into the outer tube 4, and pull the outer tube 4 out of the endoscopic forceps.

(5) Push the handle 7 of the negative pressure device 1, and use air to discharge the specimen from the needle tube 5, and usually collect the specimen with a glass slide or a sample collection bottle.

(6) Complete the above operations again to perform needle biopsy for cell and tissue samples.

The puncture effect of the biopsy instrument of the present invention is ideal, especially suitable for obtaining long tissue samples; the hardness of the needle tube body section of the puncture biopsy needle is much smaller than other puncture needle designs of the same diameter, which makes the needle tube buckle with the forceps. The operation resistance is reduced; at the same time, the length of the needle can be selected according to the required puncture depth during the operation; during the operation, the operator can freely choose to perform tissue biopsy or cell puncture aspiration. It greatly simplifies the puncture operation and improves the safety of the operation. It is not only suitable for endoscopic ultrasonography of the digestive tract, but also suitable for endoscopic ultrasonography of the trachea, and is also suitable for puncture under conventional non-ultrasound endoscopy.

The above is just to illustrate some principles of the present invention. This description is not intended to limit the present invention to the specific structure and scope of application shown. Therefore, all corresponding modifications and equivalents that may be used are Belong to the scope of the patent applied for by the present invention.

Except for the technical features described in the description, the rest of the technical features are known to those skilled in the art.

Claims (8)

1. suction integration is through scope aspiration biopsy instrument, characterized in that including suction unit, limiting component, outer tube, outer tube hand Handle, needle tubing, syringe handle and interior core filaments, the needle tubing are placed in outer tube bore, and needle tubing is made of needle point section and needle body section, the needle Apical segment is pierced by distal outer tube, and needle body section is pierced by proximal outer tube and is connect with syringe handle, and proximal end and the suction unit of syringe handle connect It connects；The proximal end of the limiting component and outer tube handle is rotatablely connected, and the syringe handle is equipped with sliding block, the sliding block and limit Part is slidably connected.

2. suction integration according to claim 1 is through scope aspiration biopsy instrument, characterized in that the limiting component is logical It crosses rotating hole to be rotatablely connected with outer tube handle proximate end, limiting component is equipped with 15mm puncture tanks and 20mm puncture tanks, syringe handle On sliding block be slidably connected with 15mm puncture tanks or 20mm puncture tanks；The 15mm puncture tanks and 20mm puncture tanks side are set respectively There is corresponding mark.

3. suction according to claim 1 integration is through scope aspiration biopsy instrument, characterized in that the suction unit is Negtive-pressure implement is made of pull handle, locating piece, locating slot and piston.

4. suction integration according to claim 1 is through scope aspiration biopsy instrument, characterized in that the interior core filaments are transversal Face is round, and interior core filaments pass through needle tube body portion, there are axial lacuna between the interior core filaments and needle interior wall, interior core filaments it is remote Beyond except distal tip, proximal end connects the pull handle of negtive-pressure implement at end；The distal end of the interior core filaments is a round end, uniform inclined-plane or more Inclined-plane.

5. suction integration according to claim 1 is through scope aspiration biopsy instrument, characterized in that the needle point of the needle tubing For sharp keen uniform beveled point, semicircle needle point or arc needle point.

6. suction integration according to claim 1 is through scope aspiration biopsy instrument, characterized in that on the limiting component If there are two 15mm puncture tanks and two 20mm puncture tanks, the angle of adjacent puncture tank is 90 degree.

7. suction integration according to claim 1 is through scope aspiration biopsy instrument, characterized in that the needle point of the needle tubing Section hair side or irregular surface treatment.

8. suction integration according to claim 1 is through scope aspiration biopsy instrument, characterized in that the diameter of the needle tubing It is writing a Chinese character in simplified form for unit gauge for 17g-25g, g.