CN115040211A - Luoyang shovel type puncture sampling needle for ultrasonic endoscope and use method thereof - Google Patents
Luoyang shovel type puncture sampling needle for ultrasonic endoscope and use method thereof Download PDFInfo
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/0045—Devices for taking samples of body liquids
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/0266—Pointed or sharp biopsy instruments means for severing sample
- A61B10/0275—Pointed or sharp biopsy instruments means for severing sample with sample notch, e.g. on the side of inner stylet
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- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/04—Endoscopic instruments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
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- A61B17/3478—Endoscopic needles, e.g. for infusion
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/04—Endoscopic instruments
- A61B2010/045—Needles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
- A61B2017/3413—Needle locating or guiding means guided by ultrasound
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B2017/3454—Details of tips
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Abstract
The invention relates to a Luoyang shovel type puncture sampling needle for an ultrasonic endoscope, which comprises a handle assembly, an outer tube, a core wire and a needle tube, wherein the outer tube is connected with the handle assembly; the front end of the handle assembly is connected with the outer tube, and the needle tube and the core wire are coaxially arranged in the central cavity of the outer tube from outside to inside in sequence; the needle tube is connected with a rotating part in the handle assembly, and the core wire is connected with a plug part in the handle assembly; the front end of the needle tube sequentially consists of a needle point, a needle cavity and a needle tip, and the outer circumference of the needle cavity is provided with a strip groove communicated with the inner cavity, so that the front end of the needle tube forms a Luoyang shovel-shaped structure. The front end of the puncture sampling needle adopts a Luoyang shovel structure, so that the sampling amount in the examination is increased, and reliable guarantee is provided for subsequent detection and diagnosis.
Description
Technical Field
The invention relates to a Luoyang shovel type puncture sampling needle for an ultrasonic endoscope and a using method thereof, which are used in the diagnosis and treatment process of the ultrasonic endoscope of the alimentary canal and belong to a medical instrument.
Background
With the continuous progress and development of minimally invasive medical technology, most of the lesions in the alimentary canal are usually diagnosed and treated by using instruments under an endoscope, and the endoscopic device becomes a more conventional endoscopic examination means due to small trauma of a puncture sampling needle for the endoscope, accurate positioning and convenient examination and operation.
Most puncture needles currently used have small sampling amount, particularly hard pathological tissues, repeated puncture is needed in the process of sampling the pathological tissues, the liquid components of the sampled tissues are more, the solid components are less, the limitation is brought to detection and diagnosis, and the possibility of repeated sampling is existed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a Luoyang shovel type puncture sampling needle for an ultrasonic endoscope, wherein the front end of the puncture sampling needle adopts a Luoyang shovel structure, so that the sampling amount in the examination is increased, and the reliable guarantee is provided for the subsequent detection and diagnosis.
In order to solve the problems, the invention creates the following specific technical scheme: a Luoyang shovel type puncture sampling needle for an ultrasonic endoscope comprises a handle assembly, an outer tube, a core wire and a needle tube; the front end of the handle assembly is connected with the outer tube, and the needle tube and the core wire are coaxially arranged in the central cavity of the outer tube from outside to inside in sequence; the needle tube is connected with a rotating part in the handle assembly, and the core wire is connected with a plug part in the handle assembly; the front end of the needle tube sequentially comprises a needle point, a needle cavity and a needle tip, and the outer circumference of the needle cavity is provided with a strip groove communicated with the inner cavity, so that the front end of the needle tube forms a Luoyang shovel-shaped structure.
The handle assembly comprises a fixed handle, a positioning ring, a core pipe, a rear-end handle, a thin steel pipe, a direction wheel and a core wire handle; the core tube is coaxially connected in the cavity of the fixed handle, the front end of the core tube is connected with the outer tube, and the rear end of the core tube is in sliding connection with the inner cavity of the rear-end handle; the front end of the rear end handle is coaxially matched with the outer circumference of the fixed handle, a thin steel tube is coaxially arranged in an inner cavity of the rear end handle, the front end of the thin steel tube is connected with a needle tube, the rear end of the thin steel tube is connected with a direction wheel, and the thin steel tube and the direction wheel form a rotating part to drive the needle tube to rotate; the core wire handle is used as a plugging part and is positioned at the rear end of the direction wheel, and moves back and forth along the axis direction of the direction wheel, the core wire is connected on the core wire handle, the front end of the core wire sequentially passes through the direction wheel, the thin steel tube and the needle tube, and extends out or retracts from the front end of the inner cavity of the needle tube.
The outer circumference of fixed handle be equipped with spacing scale and equidistance distribution's positioning groove, fixed handle's outer circumference is equipped with the holding ring, is equipped with the button on the holding ring, the button is connected with the intra-annular elastic positioning piece of holding ring, the elastic positioning piece cooperates with one of them arbitrary positioning groove, rear end handle and holding ring rear end face laminating when moving forward extreme position.
The inner cavity at the front end of the fixed handle is coaxially matched with the front end handle in a sliding way, and a plane is milled on the front end handle; the front end of the outer circumference of the fixed handle is provided with a fixed screw which is radially inserted into the cavity and tightly propped against the plane of the front end handle; the front end of the front end handle is provided with external threads, the front end joint is arranged in a front end hole of the front end handle and is connected with the external threads of the front end handle through internal threads at the rear end of the inner circumference of the front end cap, and the front end part of the front end joint is provided with a quick-change structure connected with an external structure.
The outer circumference of the front-end handle is provided with positioning scales along the axis direction, and the front end face of the fixed handle is a reference position of the positioning scales.
The inner hole of the steering wheel is coaxially in interference fit with a hollow needle tube joint, and the outer circumference of the needle tube joint is sequentially provided with a positioning table, a limiting boss and a process connecting hole from back to front; the front end face of the steering wheel is attached to the rear end face of the positioning table, the limiting boss is clamped at the rear end of the inner cavity of the rear-end handle, and the tail end of the rear-end handle is located between the limiting boss and the positioning table; the thin steel tube is inserted into the front end part of the needle tube joint and is fixed by gluing through the technical connecting hole.
The front end of the core wire handle is provided with a spline shaft, and the front end of the spline shaft is connected with the core wire; the rear end part of the needle tube joint extending out of the direction wheel is provided with an inner hole, and the spline shaft is in sliding fit with the inner hole of the needle tube joint.
The rear end part of the core tube is provided with a convex clamping point, the rear end part of the fixed handle is provided with a square groove corresponding to the position of the fixed handle, and the convex clamping point is clamped and matched with the square groove; the rear end face of the core tube is provided with a limiting end face with the diameter larger than that of the front end of the core tube, the limiting end face is provided with a sliding groove, and the sliding groove is in sliding connection with the inner cavity of the rear-end handle.
The outer edge of the needle point is provided with a front section cutting edge; the long strip groove of the needle cavity consists of a narrow groove and a window groove, the front end of the narrow groove is communicated with the needle point, when the width of the narrow groove is A, the width B of the window groove is larger than A, and the window groove is in transition connection with a fillet at the end face of the narrow groove; the edge of the strip-shaped groove is provided with a rear section cutting edge to form a one-way Luoyang shovel structure; or two groups of strip grooves are arranged, each group is respectively provided with a narrow groove and a window groove, and the strip grooves are respectively arranged on two sides of the needle cavity in a staggered manner to form a bidirectional Luoyang shovel structure; or the long strip groove is only provided with narrow groove, the two narrow grooves are respectively arranged on two sides of the needle cavity in a staggered mode, and a barb needle opposite to the advancing direction is arranged in each narrow groove, so that a bidirectional narrow groove Luoyang shovel structure is formed.
The method of using a Luoyang shovel-type puncture sampling needle for an ultrasonic endoscope according to claim 3, comprising the steps of:
the first step is as follows: connecting the front end joint with external equipment, sliding the front end handle, adjusting the relative distance between the front end joint and the external equipment, and positioning and locking the front end handle through a fixing screw after the front end joint and the external equipment are adjusted;
the second step is that: pressing the key to enable the positioning ring to slide on the fixed handle, adjusting the puncture moving distance, wherein the adjusting distance can be read through the limiting scale;
the third step: the core wire is controlled to move backwards along the axis direction by pulling out the core wire handle, and the rear end handle moves forwards to reach the rear end face of the positioning ring and stops; the needle tube is controlled to rotate through the rotating direction wheel;
the fourth step: after the clinical sampling is finished, the puncture sampling needle is integrally pulled out, and the core wire handle drives the core wire to move forwards along the axis direction, so that a sampling sample is pushed out.
The utility model provides a luoyang shovel type puncture sampling needle for ultrasonic endoscope cuts the needle tubing into luoyang shovel type, and the needle tubing punctures the back, takes out the tissue that gets into in the needle tubing as far as, and the problem that the sample size is few in traditional alimentary canal ultrasonic endoscope inspection has been solved to its purpose, avoids the sample because of the most is that tissue liquid or sample size are not enough to lead to the epilogue diagnosis inaccurate, even need sample drawback repeatedly. Simultaneously, the handle assembly sets up rotating part and plug portion, can realize the rotatory of needle tubing and the plug of core silk, provides more convenient operating function for the sample.
Drawings
Fig. 1 is a schematic view of the entire structure of a luoyang shovel-type puncture sampling needle for an ultrasonic endoscope.
Fig. 2 is an overall sectional view of a luoyang shovel-type puncture sampling needle for an ultrasonic endoscope.
FIG. 3 is an enlarged partial view of the front end of the sampling needle of the present application.
FIG. 4a is a schematic view of the structure of a Luoyang shovel at the front end of a needle tube.
Fig. 4b is a cross-sectional view a-a of fig. 4 a.
Fig. 4c is a cross-sectional view B-B of fig. 4 a.
Fig. 4d is a cross-sectional view C-C of fig. 4 a.
Fig. 5 is a view of the connection structure of the fixing handle and the positioning ring.
Fig. 6 is a connection structure view of the front end handle.
FIG. 7 is a view showing the connection structure between the needle hub and the thin steel tube.
FIG. 8 is a schematic view of the needle hub, steering wheel and rear handle assembly.
Fig. 9 is a schematic view of the attachment of the core wire handle.
Fig. 10 is a rear end structure view of the fixed handle.
FIG. 11 is a schematic view showing the structure of the rear end of the core tube.
FIG. 12 is a perspective view of a needle tube Luoyang shovel structure according to a second embodiment.
FIG. 13 is a bottom view of a needle cannula in accordance with an embodiment of a Luoyang shovel configuration.
FIG. 14 is a top view of a needle mount Luoyang shovel configuration in accordance with an exemplary embodiment.
FIG. 15 is a three-dimensional view of a needle tube Luoyang shovel structure embodiment.
FIG. 16 is a bottom view of a needle cannula in a Luoyang shovel configuration.
FIG. 17 is a top view of a needle mount in a Luoyang shovel configuration.
Detailed Description
As shown in fig. 1 to 3, a luoyang shovel type puncture sampling needle for an ultrasonic endoscope comprises a handle assembly a, an outer tube 1, a core wire 2 and a needle tube 3; the front end of the handle assembly A is connected with the outer tube 1, and the needle tube 3 and the core wire 2 are coaxially arranged in the central cavity of the outer tube 1 from outside to inside in sequence; the needle tube 3 is connected with a rotating part in the handle assembly A, and the core wire 2 is connected with a plugging part in the handle assembly A; the front end of the needle tube 3 consists of a needle point 3-1, a needle cavity 3-2 and a needle tip 3-3 in sequence, the front end part 3-1 is in a shape of a notch with cutting edges at two sides, and the outer circumference of the needle cavity 3-2 is used as a containing cavity and is provided with a strip groove communicated with an inner cavity, so that the front end of the needle tube 3 forms a Luoyang shovel type structure to contain extracted tissues.
As shown in fig. 2, the handle assembly a comprises a fixed handle 6, a positioning ring 8, a core tube 14, a rear end handle 9, a thin steel tube 15, a direction wheel 10 and a core wire handle 11; the core tube 14 is coaxially connected in the cavity of the fixed handle 6, the front end of the core tube 14 is connected with the outer tube 1, and the rear end of the core tube 14 is in sliding connection with the inner cavity of the rear-end handle 9; the front end of the rear end handle 9 is coaxially matched with the outer circumference of the fixed handle 6, a thin steel tube 15 is coaxially arranged in the inner cavity of the rear end handle 9, the front end of the thin steel tube 15 is connected with the needle tube 3, the rear end of the thin steel tube 15 is connected with the direction wheel 10, and the thin steel tube 15 and the direction wheel 10 form a rotating part to drive the needle tube 3 to rotate; the core wire handle 11 is used as a plugging part and is positioned at the rear end of the direction wheel 10 and moves back and forth along the axial direction of the direction wheel 10, the core wire 2 is connected on the core wire handle 11, the front end of the core wire 2 sequentially passes through the direction wheel 10, the thin steel tube 15 and the needle tube 3 and extends out or retracts from the front end of the inner cavity of the needle tube 3.
As shown in fig. 5, the outer circumference of the fixed handle 6 is provided with limit scales 6-2 and positioning slots 6-1 distributed at equal intervals, the outer circumference of the fixed handle 6 is provided with a positioning ring 8, the positioning ring 8 is provided with a button 8-3, the button 8-3 is connected with an elastic positioning piece 8-1 in the positioning ring 8, the elastic positioning piece 8-1 is matched with any one positioning slot 6-1, and the rear end handle 9 is attached to the rear end face of the positioning ring 8 when moving forward to the limit position. The structure limits the movement limit position of the rear-end handle 9, and the position can be adjusted numerically through the limit scales 6-2 according to the individual difference of patients, so that the insertion depth of the needle tube 3 can be adjusted. A visual window 8-2 is arranged on the circumference of the positioning ring 8 to ensure that the elastic positioning piece 8-1 is in clamping fit with the clamping groove 6-1 at the designated position.
As shown in fig. 6, the front-end inner cavity of the fixed handle 6 is coaxially and slidably matched with the front-end handle 12, and a plane 12-2 is milled on the front-end handle 12; a fixing screw 7 is arranged at the front end of the outer circumference of the fixed handle 6, and the fixing screw 7 is radially inserted into the cavity and tightly propped against the plane 12-2 of the front-end handle 12; the front end of the front end handle 12 is provided with an external thread, the front end joint 4 is arranged in the front end hole of the front end handle 12 and is connected with the external thread of the front end handle 12 through the internal thread at the rear end of the inner circumference of the front end cap 5, and the front end part of the front end joint 4 is provided with a quick-change structure connected with an external structure. The outer circumference of the front end handle 12 is provided with a positioning scale 12-1 along the axis direction, and the front end surface of the fixed handle 6 is a reference position of the positioning scale 12-1 degrees. Front end handle 12 carries out the axis for fixed handle 6 and slides, is connected with external equipment through the quick change structure of front end joint 4 simultaneously, through the number of degrees of location scale 12-1, can pinpoint the position relation between the sampling needle of this application and external equipment, and for the vision adjusts the convenience, scale mark 12-1 shows for both sides.
As shown in fig. 7 and 8, the inner hole of the steering wheel 10 is coaxially in interference fit with a hollow needle tube joint 13, and the outer circumference of the needle tube joint 13 is sequentially provided with a positioning table 13-1, a limiting boss 13-2 and a process connecting hole 13-3 from back to front; wherein, the front end surface of the direction wheel 10 is jointed with the rear end surface of the positioning table 13-1, the limit boss 13-2 is clamped at the rear end of the inner cavity of the rear-end handle 9, and the tail end of the rear-end handle 9 is positioned between the limit boss 13-2 and the positioning table 13-1; the thin steel tube 15 is inserted into the front end of the needle tube joint 13 and is fixed by cementing through a process connecting hole 13-3. The needle tube joint 13 not only plays a role of connecting with the thin steel tube 15, but also is effectively connected with the direction wheel 10, so that the axial movement which cannot be transited is ensured under the limit of the limit boss 13-2 and the positioning table 13-1 while the rotation of the direction wheel is followed.
As shown in fig. 9, the front end of the core wire handle 11 is provided with a spline shaft 11-1, and the front end of the spline shaft 11-1 is connected with the core wire 2; the rear end part of the needle tube joint 13 extending out of the direction wheel 10 is provided with an inner hole, and the spline shaft 11-1 is in sliding fit with the inner hole of the needle tube joint 13. The structure realizes that the core wire handle 11 can be axially pulled out and does not rotate along with the direction wheel 10, and when the spline shaft 11-1 is inserted into the inner hole of the needle tube joint 13, the core wire handle 11 and the direction wheel 10 synchronously rotate.
As shown in fig. 10 and 11, the rear end of the core tube 14 is provided with a convex clamping point 14-1, the rear end of the fixed handle 6 is provided with a square groove 6-3 corresponding to the rear end of the fixed handle, and the convex clamping point 14-1 is clamped and matched with the square groove 6-3; the rear end face of the core tube 14 is provided with a limit end face 14-2 which is directly larger than the front end of the core tube 14, the limit end face 14-2 is provided with a sliding groove 14-3, and the sliding groove 14-3 is in sliding connection with the inner cavity of the rear end handle 9. The core tube 14 is effectively connected with the fixed handle 6 through the convex clamping point 14-1, and the limiting end surface 14-2 is provided with a sliding groove 14-3 to play a role in sliding limiting.
As shown in fig. 4a to 4d, in the first embodiment of the luoyang shovel structure, the outer edge of the needle tip 3-1 is provided with a front section cutting edge 3-1-1; the long strip groove 3-4 of the needle cavity 3-2 consists of a narrow groove 3-4-1 and a window groove 3-4-2, the front end of the narrow groove 3-4-1 is communicated with the needle point 3-1, when the width of the narrow groove 3-4-1 is A, the width B of the window groove 3-4-2 is larger than A, and the window groove is in transition connection with a fillet at the end face of the narrow groove 3-4-1; the edge of the strip groove 3-4 is provided with a rear section cutting edge 3-4-3 to form a unidirectional Luoyang shovel structure.
As shown in fig. 12 to 14, in the second embodiment of the luoyang shovel structure, the outer edge of the needle tip 3-1 is provided with a front cutting edge 3-1-1; the long strip groove 3-4 of the needle cavity 3-2 consists of a narrow groove 3-4-1 and a window groove 3-4-2, the front end of the narrow groove 3-4-1 is communicated with the needle point 3-1, when the width of the narrow groove 3-4-1 is A, the width B of the window groove 3-4-2 is larger than A, and the window groove is in transition connection with a fillet at the end face of the narrow groove 3-4-1; two groups of long grooves 3-4 are arranged, each group is respectively provided with a narrow groove 3-4-1 and a window groove 3-4-2, and the long grooves 3-4 are respectively arranged on two sides of the needle cavity 3-2 in a staggered mode to form a bidirectional Luoyang shovel structure.
In the third embodiment of the Luoyang shovel structure, as shown in FIGS. 15 to 17, the long grooves 3-4 are only provided with narrow grooves 3-4-1, two narrow grooves 3-4-1 are respectively arranged on two sides of the needle cavity 3-2 in a staggered manner, and a barbed needle 3-5 opposite to the advancing direction is arranged in each narrow groove 3-4-1, so that a bidirectional narrow groove Luoyang shovel structure is formed.
This patent is not limited to the three luoyang shovel structures schematically depicted, which may use different luoyang shovel needle tubes for puncturing different diseased tissues.
The use method of the Luoyang shovel type puncture sampling needle for the ultrasonic endoscope comprises the following steps:
the first step is as follows: connecting the front end joint 4 with external equipment, then sliding the front end handle 12, adjusting the relative distance with the external equipment, and positioning and locking the front end handle 12 through the fixing screw 7 after the adjustment is finished;
the second step is that: pressing the key 8-3 to enable the positioning ring 8 to slide on the fixed handle 6, adjusting the puncture moving distance, reading the adjusting distance through the limiting scale 6-2, and loosening the key 8-3 to enable the elastic positioning sheet 8-1 to be clamped and positioned with the positioning clamping groove 6-1 at the corresponding position after the adjustment is finished;
the third step: the core wire pulling handle 11 controls the core wire 2 to move backwards along the axis direction; the rear end handle 9 moves forwards to reach the rear end face of the positioning ring 8 and stops; the needle tube 3 is controlled to rotate by rotating the direction wheel 10;
the fourth step: after the clinical sampling is finished, the puncture sampling needle is integrally pulled out, the core wire handle 11 drives the core wire 2 to move forwards along the axis direction, and the sampling sample is pushed out.
Claims (10)
1. A Luoyang shovel type puncture sampling needle for an ultrasonic endoscope is characterized in that: comprises a handle assembly (A), an outer tube (1), a core wire (2) and a needle tube (3); the front end of the handle assembly (A) is connected with the outer tube (1), and the needle tube (3) and the core wire (2) are coaxially arranged in the central cavity of the outer tube (1) from outside to inside in sequence; the needle tube (3) is connected with a rotating part in the handle assembly (A), and the core wire (2) is connected with a plugging part in the handle assembly (A); the front end of the needle tube (3) sequentially consists of a needle point (3-1), a needle cavity (3-2) and a needle tip (3-3), and the outer circumference of the needle cavity (3-2) is provided with a long groove communicated with the inner cavity, so that the front end of the needle tube (3) forms a Luoyang shovel-shaped structure.
2. A luoyang shovel-type puncture sampling needle for an ultrasonic endoscope according to claim 1, wherein: the handle assembly (A) comprises a fixed handle (6), a positioning ring (8), a core pipe (14), a rear end handle (9), a thin steel pipe (15), a direction wheel (10) and a core wire handle (11); the core tube (14) is coaxially connected in the cavity of the fixed handle (6), the front end of the core tube (14) is connected with the outer tube (1), and the rear end of the core tube (14) is in sliding connection with the cavity of the rear-end handle (9); the front end of the rear end handle (9) is coaxially matched with the outer circumference of the fixed handle (6), a thin steel tube (15) is coaxially arranged in an inner cavity of the rear end handle (9), the front end of the thin steel tube (15) is connected with the needle tube (3), the rear end of the thin steel tube (15) is connected with the direction wheel (10), and the thin steel tube (15) and the direction wheel (10) form a rotating part to drive the needle tube (3) to rotate; the core wire handle (11) is used as a plugging part and is positioned at the rear end of the direction wheel (10) and moves back and forth along the axis direction of the direction wheel (10), the core wire (2) is connected on the core wire handle (11), the front end of the core wire (2) sequentially passes through the direction wheel (10), the thin steel pipe (15) and the needle tube (3) and extends out or retracts from the front end of the inner cavity of the needle tube (3).
3. The luoyang shovel-type puncture sampling needle for an ultrasonic endoscope according to claim 2, wherein: the outer circumference of the fixed handle (6) is provided with limiting scales (6-2) and positioning clamping grooves (6-1) distributed in an equal distance, the outer circumference of the fixed handle (6) is provided with a positioning ring (8), the positioning ring (8) is provided with a key (8-3), the key (8-3) is connected with an elastic positioning sheet (8-1) in the positioning ring (8), the elastic positioning sheet (8-1) is matched with any one of the positioning clamping grooves (6-1), and the rear end handle (9) is attached to the rear end face of the positioning ring (8) when moving forwards to a limiting position.
4. The luoyang shovel-type puncture sampling needle for an ultrasonic endoscope according to claim 2, wherein: the inner cavity at the front end of the fixed handle (6) is coaxially matched with the front end handle (12) in a sliding manner, and a plane (12-2) is milled on the front end handle (12); a fixing screw (7) is arranged at the front end of the outer circumference of the fixing handle (6), and the fixing screw (7) is radially inserted into the cavity and tightly propped against the plane (12-2) of the front-end handle (12); the front end of the front end handle (12) is provided with external threads, the front end joint (4) is arranged in a front end hole of the front end handle (12) and is connected with the external threads of the front end handle (12) through internal threads at the rear end of the inner circumference of the front end cap (5), and the front end part of the front end joint (4) is provided with a quick-change structure connected with an external structure.
5. The Luoyang shovel-type puncture sampling needle for an ultrasonic endoscope according to claim 4, wherein: the outer circumference of the front end handle (12) is provided with a positioning scale (12-1) along the axis direction, and the front end surface of the fixed handle (6) is a reference position of the positioning scale (12-1) in degrees.
6. The luoyang shovel-type puncture sampling needle for an ultrasonic endoscope according to claim 2, wherein: the inner hole of the direction wheel (10) is coaxially in interference fit with a hollow needle tube joint (13), and the outer circumference of the needle tube joint (13) is sequentially provided with a positioning table (13-1), a limiting boss (13-2) and a process connecting hole (13-3) from back to front; the front end face of the direction wheel (10) is attached to the rear end face of the positioning table (13-1), the limiting boss (13-2) is clamped at the rear end of the inner cavity of the rear-end handle (9), and the tail end of the rear-end handle (9) is located between the limiting boss (13-2) and the positioning table (13-1); the thin steel tube (15) is inserted into the front end part of the needle tube joint (13) and is fixed by gluing through the technical connecting hole (13-3).
7. The Luoyang shovel-type puncture sampling needle for an ultrasonic endoscope according to claim 6, wherein: the front end of the core wire handle (11) is provided with a spline shaft (11-1), and the front end of the spline shaft (11-1) is connected with the core wire (2); the rear end part of the needle tube joint (13) extending out of the steering wheel (10) is provided with an inner hole, and the spline shaft (11-1) is in sliding fit with the inner hole of the needle tube joint (13).
8. The luoyang shovel-type puncture sampling needle for an ultrasonic endoscope according to claim 2, wherein: the rear end part of the core tube (14) is provided with a convex clamping point (14-1), the rear end part of the fixed handle (6) is provided with a square groove (6-3) corresponding to the position of the fixed handle, and the convex clamping point (14-1) is clamped and matched with the square groove (6-3); the rear end face of the core tube (14) is provided with a limiting end face (14-2) with the diameter larger than that of the front end of the core tube (14), the limiting end face (14-2) is provided with a sliding groove (14-3), and the sliding groove (14-3) is in sliding connection with the inner cavity of the rear end handle (9).
9. A luoyang shovel type puncture sampling needle for an ultrasonic endoscope according to claim 1, wherein: the outer edge of the needle point (3-1) is provided with a front section cutting edge (3-1-1); the long groove (3-4) of the needle cavity (3-2) consists of a narrow groove (3-4-1) and a window groove (3-4-2), the front end of the narrow groove (3-4-1) is communicated with the needle point (3-1), when the width of the narrow groove (3-4-1) is A, the width B of the window groove (3-4-2) is larger than A, and the window groove is in transition connection with a fillet at the end face of the narrow groove (3-4-1); the edge of the long groove (3-4) is provided with a rear section cutting edge (3-4-3) to form a unidirectional Luoyang shovel structure; or two groups of long strip grooves (3-4) are arranged, each group is respectively provided with a narrow groove (3-4-1) and a window groove (3-4-2), and the long strip grooves (3-4) are respectively arranged on two sides of the needle cavity (3-2) in a staggered manner to form a bidirectional Luoyang shovel structure; or the long groove (3-4) is only provided with the narrow groove (3-4-1), the two narrow grooves (3-4-1) are respectively arranged at the two sides of the needle cavity (3-2) in a staggered way, and a barbed needle (3-5) with the direction opposite to the advancing direction is arranged in each narrow groove (3-4-1), so that a bidirectional narrow groove Luoyang shovel structure is formed.
10. The method of using a Luoyang shovel-type puncture sampling needle for an ultrasonic endoscope according to claim 3, comprising the steps of:
the first step is as follows: connecting the front end joint (4) with external equipment, then sliding the front end handle (12), adjusting the relative distance between the front end joint and the external equipment, and positioning and locking the front end handle (12) through a fixing screw (7) after the front end joint and the external equipment are adjusted;
the second step is that: pressing the key (8-3) to enable the positioning ring (8) to slide on the fixed handle (6), adjusting the puncture moving distance, wherein the adjusting distance can be read through the limiting scale (6-2), and when the adjustment is finished, loosening the key (8-3) to enable the elastic positioning sheet (8-1) to be clamped and positioned with the positioning clamping groove (6-1) at the corresponding position;
the third step: the core wire pulling handle (11) controls the core wire (2) to move backwards along the axis direction, and the rear end handle (9) moves forwards to reach the rear end face of the positioning ring (8) and stops; the needle tube (3) is controlled to rotate by rotating the direction wheel (10);
the fourth step: after clinical sampling is finished, the puncture sampling needle is integrally pulled out, and the core wire handle (11) drives the core wire (2) to move forwards along the axis direction to push out a sampling sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210585136.8A CN115040211A (en) | 2022-05-27 | 2022-05-27 | Luoyang shovel type puncture sampling needle for ultrasonic endoscope and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210585136.8A CN115040211A (en) | 2022-05-27 | 2022-05-27 | Luoyang shovel type puncture sampling needle for ultrasonic endoscope and use method thereof |
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| CN115040211A true CN115040211A (en) | 2022-09-13 |
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|---|---|---|---|
| CN202210585136.8A Withdrawn CN115040211A (en) | 2022-05-27 | 2022-05-27 | Luoyang shovel type puncture sampling needle for ultrasonic endoscope and use method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116784892A (en) * | 2023-05-22 | 2023-09-22 | 南昌大学第一附属医院 | Automatic synovial biopsy sampling combined device and application method thereof |
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2022
- 2022-05-27 CN CN202210585136.8A patent/CN115040211A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116784892A (en) * | 2023-05-22 | 2023-09-22 | 南昌大学第一附属医院 | Automatic synovial biopsy sampling combined device and application method thereof |
| CN116784892B (en) * | 2023-05-22 | 2023-11-03 | 南昌大学第一附属医院 | Automatic synovial biopsy sampling combined device and application method thereof |
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Application publication date: 20220913 |