CN209074693U - Biopsy needle device - Google Patents

Abstract

The utility model provides a kind of sound reduced or generate when mitigating transmitting biopsy needle, and the biopsy needle device that can be manufactured with low cost.A kind of biopsy needle device is provided, is had: shell；Outer needle clamper keeps hollow outer needle, which is movably secured to shell between progressive position and going-back position；Interior needle clamper, keeps interior needle, which is movably configured at the inside of outer needle between progressive position and going-back position；Interior needle spring assigns the power that saves up strength for moving interior needle to the advanced position from going-back position with clamper；And outer needle spring, the power that saves up strength for moving outer needle to the advanced position from going-back position with clamper is assigned, with the storage space of stored sample, at least one party of outer needle clamper and interior needle clamper between interior needle and outer needle, it is abutted in progressive position with shell, is equipped with opening portion in shell.

Description

Biopsy needle device

Technical field

The utility model relates to biopsy needle devices used in a kind of biopsy checked in the tissue for taking affected part.

Background technique

Biopsy needle device is the device in order to check, treat or diagnose and take a part of bio-tissue.Wherein, it mentions A kind of device is gone out, has had:, will in the hollow outer needle that top end part is formed with the interior needle of notch section and the interior needle is inserted into The top end part of interior needle is punctured into organism, later, is moved outer needle in a manner of covering the top end part of interior needle, will be organized Piece takes in notch section (for example, referring to patent document 1).

Existing technical literature

Patent document

Patent document 1: Japanese Patent Publication 6-28663 bulletin

Utility model content

Technical problem to be solved in the utility model

In biopsy needle device described in Patent Document 1, needle is emitted by the power of spring, therefore in transmitting, it is fixed The clamper and shell of needle collide, and generate biggish sound.This transmitting sound causes suffering to the patient of puncture biopsy needle sometimes.

But the power for weakening spring to reduce the sound of generation can impact the property taken of tissue, therefore nothing Method is done so.In addition, sound leaks out to outside, eliminates leakage sound in order to prevent, using the construction in the hole for reducing shell, but so then The construction for needing change operation handle, rises manufacturing cost.In addition, improving the rigidity of shell to inhibit sympathetic response, or in shell Body assembles the case where sound-absorbing part, also can increase manufacturing cost.

The utility model be complete in view of the above problems, it is intended that provide it is a kind of reduction or mitigation transmitting live The sound generated when examining needle, and the biopsy needle device that can be manufactured with low cost.

Technical teaching for solving the problem was

In order to solve described problem, the biopsy needle device of an embodiment of the utility model, has:

Shell；

Outer needle clamper keeps hollow outer needle, and the hollow outer needle is removable between progressive position and going-back position It is secured to the shell dynamicly；

Interior needle clamper, keeps interior needle, which is movably configured at institute between progressive position and going-back position State the inside of outer needle；

Interior needle spring assigns the storage for keeping the interior needle clamper mobile to the progressive position from the going-back position Force；And

Outer needle spring assigns the storage for keeping the outer needle clamper mobile to the progressive position from the going-back position Force,

There is the storage space of stored sample between the interior needle and the outer needle,

At least one party of the outer needle clamper and the interior needle clamper, in the progressive position and the shell It abuts,

Opening portion is equipped in the shell.

The biopsy needle device of one embodiment of the utility model on the basis of above-mentioned composition, also the shell with Damping of shocks component is equipped between at least one party of the outer needle clamper and the interior needle clamper.

The effect of utility model

According to above embodiment, the impulsive sound for colliding clamper with shell and opening portion is arranged in shell does not gather It combines in enclosure interior and leaks to outside, therefore sympathetic response can be prevented.For this purpose, can provide one kind can reduce or mitigate transmitting sound, and And the biopsy needle device being manufactured with low cost.

In addition, the resonance of shell can be inhibited by the way that damping of shocks component is arranged in the part of shell and clamper collision.

Detailed description of the invention

Fig. 1 is the perspective view of the biopsy needle device for the first embodiment for showing schematically the utility model.

Fig. 2 (a) is the side view for showing schematically the arrow direction A-A of Fig. 1, and Fig. 2 (b) is the arrow for showing schematically Fig. 1 The side view of head direction B-B, Fig. 2 (c) is the side view for showing schematically the arrow direction C-C of Fig. 1.

Fig. 3 is the figure for showing schematically the sectional view of arrow direction D-D of Fig. 2 (a), and wherein Fig. 3 (a) indicates to prepare rank Section, Fig. 3 (b) indicate the state that saves up strength, and Fig. 3 (c) indicates that interior needle emission state, Fig. 3 (d) indicate outer needle emission state.

Fig. 4 is the figure for indicating to be equipped with the state of interior needle in hollow outer needle.

Fig. 5 is the biopsy needle dress for the second embodiment for showing schematically the utility model for being equipped with damping of shocks component The sectional view set.

Fig. 6 is the perspective view for showing schematically existing biopsy needle device.

Fig. 7 is the curve graph of the relationship of the sound pressure level and frequency when indicating the transmitting sound maximum in embodiment and comparative example.

Fig. 8 is the curve graph for indicating the decaying of the sound pressure level in embodiment and comparative example.

Specific embodiment

(explanation of the biopsy needle device of the first embodiment of the utility model)

Hereinafter, being described with reference to the biopsy needle device of the first embodiment of the utility model.

It should be noted that in the following description, marking phase to corresponding component with the same function in the various figures Same appended drawing reference.

Biopsy needle device of the < equipped with opening portion illustrates >

Firstly, referring to Fig.1 and Fig. 2, carrying out the shape of the biopsy needle device of an embodiment of the utility model Explanation.Fig. 1 is the perspective view for showing schematically the biopsy needle device of an embodiment of the utility model.

Fig. 2 (a) is the side view for showing schematically the arrow direction A-A of Fig. 1, and Fig. 2 (b) is the arrow for showing schematically Fig. 1 The side view of head direction B-B, Fig. 2 (c) is the side view for showing schematically the arrow direction C-C of Fig. 1.In fig. 2 it is shown that setting There is the biopsy needle device of opening portion 20.

As shown in Figure 1, the shell 4 of the base portion as biopsy needle device 2 has approximately cuboid shape.On the top of shell 4 Face, hollow outer needle 6 and solid interior needle 10 are slidably mounted on longitudinal direction.In a side of the long side with shell 4 Face is configured with outer needle lever 22 and interior needle lever 24.Similarly, in another side of the long side with shell 4 Configured with transmitting handle 28.

As shown in Fig. 2 (a), the opening portion 20 of present embodiment is matched side by side in the side two rows configured with transmitting handle 28 It is equipped with multiple slits.On the other hand, as shown in Fig. 2 (b), the opening portion 20 of present embodiment is not set to and grasps configured with outer needle Make the face of handle 22 and interior needle lever 24.

As shown in Fig. 2 (c), the opening portion 20 of present embodiment is two rows of in the side opposed with side shown in Fig. 2 (a) It is configured with multiple slits side by side.The opening portion 20 of present embodiment is set to two sides in opposed mode.

< illustrates > about the transmitting of biopsy needle

Then, the internal structure and use of the biopsy needle device of an embodiment of the utility model are illustrated referring to Fig. 3 In the movement of transmitting biopsy needle.Fig. 3 is the figure for showing schematically the sectional view of arrow direction D-D of Fig. 2 (a), and Fig. 3 (a) is indicated Preparation stage, Fig. 3 (b) indicate the state that saves up strength, and Fig. 3 (c) indicates that interior needle emission state, Fig. 3 (d) indicate outer needle emission state.

Firstly, carrying out the in-built explanation of biopsy needle device 2.

Interior needle 10 and outer needle 6 are the crosspointers of biopsy, detailed in explanation later using Fig. 4.In Fig. 3 (a), Fig. 3 (b), Interior needle 10 is fixed on interior needle clamper 12, and outer needle 6 is fixed on outer needle clamper 8, and interior needle 10 is inserted into the inside of outer needle 6.

Interior needle 10, outer needle 6 respectively can be in progressive position (the reference Fig. 3 for the state stretched out more outward relative to shell 4 (a)) and than being moved between the going-back position (referring to Fig. 3 (b)) of its state being more inwardly indented.

Interior needle clamper 12 can be embedded in guiding groove 40 and move between progressive position and going-back position.Similarly, outside Needle clamper can be embedded in guiding groove 42 and move between progressive position and going-back position.

Shell 4 has an interior needle guidance driving portion 30, interior needle guidance driving portion 30 by interior needle clamper 12, guiding groove 40 with And interior needle is constituted with spring 16.Interior needle is with spring 16 for making interior needle 10 be moved to advanced potential from going-back position along guiding groove 40 It sets.

In addition, shell 4 has outer needle guidance driving portion 32, outer needle guidance driving portion 32 is by outer needle clamper 8, guidance Slot 42 and outer needle are constituted with spring 14.Outer needle with spring 14 for being moved to outer needle 6 from going-back position along guiding groove 42 before Carry is set.

In the present embodiment, after transmitting interior needle 10 (being moved to progressive position from going-back position), emit outer needle 6 (being moved to progressive position from going-back position) is therefore equipped with interior needle behind shell 4 and guides driving portion 30, be equipped in front Outer needle guides driving portion 32.

Interior needle spring 16 and outer needle spring 14 are compressed springs, and when interior needle clamper 12, outer needle press from both sides When holder 8 is moved to going-back position from progressive position, become the state compressed and saved up strength.

Outer needle clamper 8 and interior needle clamper 12 have locking pawl, in going-back position, respectively and set on shell 4 Outer needle engaging portion 34, interior needle it is chimeric with engaging portion 36.When the locking pawl and outer needle engaging portion 34 of outer needle clamper 8 are embedding When conjunction, the state that outer needle is saved up strength with spring 14 is kept.Similarly, when the locking pawl of interior needle clamper 12 and interior needle card When determining portion 36 and being fitted into, the state that interior needle is saved up strength with spring 16 is kept.

Transmitting handle 28 is integrated with release lever 44, and gear 46 can be made to rotate.Gear 46 blocks with the releasing portion 38 as rack gear It closes.When pulling transmitting handle 28, release lever 44 is pressed down, and gear 46 rotates and is gradually increasing releasing portion 38.

Releasing portion 38 is forced outwardly by the power of spring, and is gradually increasing the middle corresponding power of needs, thus is played Effect as switching lock.It is embedding with engaging portion 36 with interior needle when releasing portion 38 is abutted with interior needle with the locking pawl of clamper 12 The locking pawl of the interior needle clamper 12 closed breaks off relations.It should be noted that releasing portion 38 is set to the rear end of shell 4, it also can be straight It connects pressing rear end and is gradually increasing.

Then, illustrate the movement of the mechanism of biopsy needle device 2 with above-mentioned construction.

Fig. 3 (a) indicates the preparation stage.In the preparation stage, interior needle spring 16 and outer needle spring 14 are in stretching State, interior needle 10 and outer needle 6 are located at progressive position.

Fig. 3 (b) indicates the operation by outer needle lever 22 and interior needle lever 24, makes interior needle 10 and outer needle 6 The state that saves up strength of the spring of going-back position is moved to from the state of Fig. 3 (a).

By operating the outer needle lever 22 that engages with outer needle clamper 8, after so that outer needle 6 is postponed and is retreated to from advanced potential It gives up the throne and sets, outer needle spring 14 is saved up strength.Similarly, by operating the interior needle lever engaged with interior needle with clamper 12 24, it postpones interior needle 10 from advanced potential and retreats to going-back position, interior needle spring 16 is saved up strength.

Fig. 3 (c) is indicated by that will emit handle 28 from the state that saves up strength of Fig. 3 (b) to the pulling of the direction of arrow come needle in emitting 10, make top more outstanding state of the interior needle 10 from outer needle 6.

Emit handle 28 by pulling, the locking pawl of interior needle clamper 12 breaks off relations from interior needle engaging portion 36, is used by interior needle The interior needle that spring 16 exerts a force is moved to progressive position from going-back position along guiding groove 40 with clamper 12.

Fig. 3 (d) indicates the outer needle 6 of transmitting, makes outer needle 6 from the state outstanding of shell 4.As shown in Fig. 3 (c), when interior needle presss from both sides Holder 12 is exerted a force, when colliding with the locking pawl of outer needle engaging portion 34 and outer needle clamper 8, due to interior needle clamper The locking pawl of impact when 12 collision, outer needle clamper 8 breaks off relations from outer needle engaging portion 34.In this way, by outer needle bullet The outer needle that spring 14 exerts a force is moved to progressive position from going-back position along guiding groove 42 with clamper 8.At this point, outer needle 4 is prominent to cover The mode for arriving the region of the outside of interior needle out is moved.

As described above, passing through interior needle clamper 12 and outer needle engaging portion 34 and the locking pawl of outer needle clamper 8 Collision, and emit outer needle 6, therefore, the transmitting of outer needle 6 and interior needle 10 has the time difference.In the interior needle clamping to be exerted a force by spring When device 12 and outer needle clamper 8 and shell 4 collide, biggish impulsive sound is issued.

< about biopsy needle sample take method illustrate >

Then, the sample of biopsy needle is illustrated referring to Fig. 4 takes method.Fig. 4 is indicated in hollow outer needle is equipped with The figure of the state of needle.

In Fig. 4, interior needle 10 can slide among outer needle 6.It is equipped with storage space 18 in interior needle 10, in this stored sample (referring to Fig. 3 (c)).When emitting interior needle 10 from biopsy needle device 2, interior needle 10 is inserted into vivo.

As described above, there is the time to be poorly launched for outer needle 6 and interior needle 10, because furthermore needle 6 also followed by needle 10 inserted Enter in vivo (referring to Fig. 3 (d)).By outer needle 6 in the outer Slideslip of interior needle 10, a part of bio-tissue is stored to storage Deposit space 18.

Later, by needle 10 and outer needle 6 out of internal extract, and outer needle lever 22 is operated, is back to outer needle 6 Going-back position can take out sample by making interior needle 10 and its storage space 18 from outer needle 6 to exposing outside.

As described above, by interior needle 10 and outer needle 6 there is the time to be poorly launched, bio-tissue can be taken.It needs It is bright, in the present embodiment, illustrate the case where emitting interior needle first, then emitting outer needle, but it's not limited to that, The case where the utility model can also apply to emit outer needle, then emit interior needle.

< illustrates > about the function of impulsive sound and opening portion, effect

Fig. 6 is existing biopsy needle device.Existing biopsy needle device does not have an opening portion, emit in needle and when outer needle Impulsive sound is gathered in shell.The esoteric impulsive sound of shell refers to, the needle and when outer needle in emitting, interior needle clamper or Outer needle clamper and shell collide and the sound of generation.Impulsive sound is assembled in shell and is empathized, and thus makes to emit sound Become biggish sound.

In the present embodiment, using the composition for mitigating transmitting sound when emitting the outer needle 6 and interior needle 10, it is equipped with opening Portion 20.

As shown in Figure 1 and Figure 2, by the way that opening portion 20 is arranged in shell 4, impulsive sound is made to escape to outside.Since impulsive sound leaks Outside is arrived out, therefore is not empathized in shell, and the transmitting sound of biopsy needle can be reduced or mitigate.

In the present embodiment, the shape of opening portion 20 is set as slit, but it's not limited to that, is also possible to circle Deng.Shape, the size of opening portion 20 are suitably determined according to the intensity of shell.

The gross area of opening portion 20 is bigger, and effect is better.In addition, even if the gross area is identical, the size of each opening portion 20 Bigger, the effect that impulsive sound is leaked out to outside shell is bigger.But the finger that opening portion 20 is preferably set to hold the hand of shell is being grasped The size that can not be protruded into when making.

In addition, as shown in Fig. 2, can not assemble in shell and more effectively reduce since impulsive sound is from two sides leakage Emit sound.Further, since constructing without change operation handle, therefore manufacturing cost can be inhibited.

The biopsy needle device 2 of present embodiment is the so-called singlehanded type automatic biopsy needle of energy one-handed performance.But not It is limited to this, such as is also possible to the biopsy needle device of both hands operation.In addition, if being generated by clamper and shell collision The biopsy needle device of impulsive sound, also can be equally applicable.

(explanation of the biopsy needle device of the second embodiment of the utility model)

Then, the biopsy needle device of the second embodiment of the utility model is illustrated referring to Fig. 5.Fig. 5 is to show schematically It is equipped with the sectional view of the biopsy needle device of an embodiment of the utility model of damping of shocks component.

In the biopsy needle device of Fig. 5, damping of shocks component 26 is further set to the outer needle clamper 8 of progressive position Between shell 4.Existing biopsy needle device have space, therefore shell 4 due to transmitting impact and resonate.When shell 4 is total When vibration, the transmitting change of tune of biopsy needle is big.

Damping of shocks component 26 is set to outer needle with clamper 8 in the position that progressive position is abutted with shell 4, can mitigate outer needle 6 are launched and impact that the outer needle clamper 8 that is exerted a force and shell 4 collide, and mitigate the resonance of shell 4.

Damping of shocks component preferably has elasticity and is easily formed and relatively light.Such as resin etc. can be used.

Such as above composition, the resonance of shell 4 can be inhibited and mitigate the transmitting sound of biopsy needle.Damping of shocks component is to be embedded in Mode in place of the space of shell is come using therefore capable of inhibiting manufacturing cost without the design alteration of biopsy needle unit body.

Although the description of the embodiments of the present invention, embodiment, but disclosure can also be in the thin of composition Section part changes, and in the scope of the claims and thought of the utility model not departed from, is able to achieve embodiment, reality Apply the combination of the element of scheme, variation of sequence etc..

Embodiment

Hereinafter, embodiment is shown in order to express the specific embodiment of the utility model, but the utility model is simultaneously It is not limited to embodiments illustrated here.

As embodiment, using by the biopsy needle device represented by Fig. 1, Fig. 2 shown in first embodiment, as comparing Example, using by the biopsy needle device represented by Fig. 6.

The relationship of sound pressure level and frequency when Fig. 7 indicates the transmitting sound maximum in embodiment and comparative example.Embodiment with than It is compared compared with example, in the frequency band of 100~1000Hz, sound pressure level decline.

Fig. 8 shows the decaying of the sound pressure level in embodiment and comparative example.Embodiment is compared with comparative example, it is known that sound pressure level Decaying is very fast.Therefore, it is known that the utility model can inhibit sympathetic response and the decaying of sound is made to become faster, as a result, having reduces hair Penetrate the effect of sound.

Description of symbols

2 biopsy needle devices；4 shells；6 outer needles；8 outer needle clampers；Needle in 10；Needle clamper in 12；14 outer needles are used Spring；Needle spring in 16；18 storage spaces；20 opening portions；22 outer needle levers；Needle lever in 24；26 impacts are slow Rush component；28 transmitting handles；Needle guides driving portion in 30；32 outer needles guide driving portion；34 outer needle engaging portions；Needle card in 36 Determine portion；38 releasing portion；40 guiding grooves；42 guiding grooves；44 release levers；46 gears.

Claims (5)

1. a kind of biopsy needle device, which is characterized in that have:

Shell；

Outer needle clamper keeps hollow outer needle, the hollow outer needle between progressive position and going-back position movably It is secured to the shell；

Interior needle clamper, keeps interior needle, which is movably configured at described outer between progressive position and going-back position The inside of needle；

Interior needle spring, assigning makes the interior needle clamper save up strength from the going-back position to the progressive position is mobile Power；And

Outer needle spring, assigning makes the outer needle clamper save up strength from the going-back position to the progressive position is mobile Power,

There is the storage space of stored sample between the interior needle and the outer needle,

At least one party of the outer needle clamper and the interior needle clamper, supports in the progressive position and the shell It connects,

Opening portion is equipped in the shell.

2. biopsy needle device according to claim 1, which is characterized in that

The opening portion is made of multiple slits.

3. biopsy needle device according to claim 1 or 2, which is characterized in that

The shell is substantially rectangular parallelepiped, has the side moved with the interior needle clamper and the outer needle clamper To substantially parallel first to third face,

First face and second face are substantially orthogonal,

First face is opposed with the third face,

The opening portion is set to first face and the third face,

Make the behaviour that the interior needle clamper and the outer needle clamper are mobile to the going-back position from the progressive position Make handle set on second face.

4. biopsy needle device according to claim 1 or 2, which is characterized in that

It is slow that impact is equipped between the shell and at least one party of the outer needle clamper and the interior needle clamper Rush component.

5. biopsy needle device according to claim 3, which is characterized in that

It is slow that impact is equipped between the shell and at least one party of the outer needle clamper and the interior needle clamper Rush component.