CA2340376A1 - Device for receiving and actuating a biopsy needle - Google Patents
Device for receiving and actuating a biopsy needle Download PDFInfo
- Publication number
- CA2340376A1 CA2340376A1 CA002340376A CA2340376A CA2340376A1 CA 2340376 A1 CA2340376 A1 CA 2340376A1 CA 002340376 A CA002340376 A CA 002340376A CA 2340376 A CA2340376 A CA 2340376A CA 2340376 A1 CA2340376 A1 CA 2340376A1
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- CA
- Canada
- Prior art keywords
- receiving
- biopsy needle
- handpiece
- needle
- receiving devices
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- 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
-
- 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
- A61B10/04—Endoscopic instruments
-
- 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
- A61B2010/0208—Biopsy devices with actuators, e.g. with triggered spring mechanisms
-
- 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
- A61B10/04—Endoscopic instruments
- A61B2010/045—Needles
Abstract
A handpiece (10) receiving a biopsy needle, whereby said handpiece can be applied to an endoscope and includes receiving devices (12, 13) for accommodating a hollow needle associated with said biopsy needle and a cutti ng device that is introduced into the hollow needle. The receiving devices can be tightened by means of a spring/locking arrangement (18, 19, 32, 21, 33, 34), whereby the hollow needle and the cutting device are drawn into the handpiec e (10). With respect to said receiving devices (12, 13), the device (13) receiving the cutting device is released first. The device (12) receiving th e hollow needle is released afterwards.
Description
Device for receiving and actuating a biopsy needle The invention relates to a device for receiving and actuating a biopsy needle, which can be introduced into an endoscope.
A device of the above type is already known (see, for example, US-A-4 249 541). However, in the previously known device, the biopsy needle can only be actuated manually, which is sometimes not enough to penetrate firm patient tissue.
It is therefore an object of the invention to find a way of safely ensuring, in a device of the type mentioned above, that the biopsy needle can also penetrate firm tissue.
According to the invention, the above object is achieved, in a device of the type mentioned at the outset, by the fact that a handpiece is provided which can be applied to the endoscope and which is equipped to receive a hollow needle, associated with the biopsy needle, and a cutting device, guided in said hollow needle, at the proximal ends in receiving devices which can be tensioned by a spring force in such a way that, in the tensioned state, the hollow needle and the cutting device are drawn a distance into the handpiece, and, of the tensioned receiving devices, the receiving device provided for receiving the cutting device can be released before the receiving device provided for receiving the hollow needle.
The invention affords the advantage that, in a relatively simple manner and in a very short time, the biopsy needle can penetrate firm tissue, into which said biopsy needle cannot penetrate, or can penetrate only with difficulty, under manual actuation.
A device of the above type is already known (see, for example, US-A-4 249 541). However, in the previously known device, the biopsy needle can only be actuated manually, which is sometimes not enough to penetrate firm patient tissue.
It is therefore an object of the invention to find a way of safely ensuring, in a device of the type mentioned above, that the biopsy needle can also penetrate firm tissue.
According to the invention, the above object is achieved, in a device of the type mentioned at the outset, by the fact that a handpiece is provided which can be applied to the endoscope and which is equipped to receive a hollow needle, associated with the biopsy needle, and a cutting device, guided in said hollow needle, at the proximal ends in receiving devices which can be tensioned by a spring force in such a way that, in the tensioned state, the hollow needle and the cutting device are drawn a distance into the handpiece, and, of the tensioned receiving devices, the receiving device provided for receiving the cutting device can be released before the receiving device provided for receiving the hollow needle.
The invention affords the advantage that, in a relatively simple manner and in a very short time, the biopsy needle can penetrate firm tissue, into which said biopsy needle cannot penetrate, or can penetrate only with difficulty, under manual actuation.
3 5 The spring force i s preferably provided by two separate springs belonging individually to the two receiving devices. This affords the advantage of a particularly simple construction.
It is also advantageous if the hollow needle . _ 2 _ and the cutting device are in each case connected to a separate holding part which is received in its own receiving device. By means of this measure, it is possible for the elements forming the biopsy needle to be accommodated in a very simple manner in the device according to the invention.
The abovementioned holding parts are preferably in each case formed by a longitudinally symmetrical shaped body which has pronounced bulges provided at is ends and extending in its longitudinal direction and, lying between these bulges, a gentle central bulge which is set back in relation to the bulges provided at the ends; the transition between the bulges runs smoothly on the respective side of the shaped body, and the receiving devices are each shaped in such a way that they receive the respective shaped bodies with a form-fit. This measure affords the advantage that the forces which occur when using the device according to the invention, as a result of the action of the spring force, can be taken up very effectively in the receiving devices, with the result that no excessive local stresses can arise.
It is expedient for the receiving devices to be allocated stop buffers which can be adjusted in the axial direction of the biopsy needle together with said receiving devices while maintaining their mutual spacing from each other. This advantageously ensures minimal shudder impact on the handpiece and thus on the endoscope connected to the latter. The stop buffers are expediently made of an elastic material, in particular plastic.
An indicator part is expediently connected to one of the stop buffers or to a support part bearing this, the indicator tip of the indicator part ending alongside an adjustment scale provided in particular on the handpiece. In this way, the length of extension of the biopsy needle can advantageously be set with precision.
In order to tension the receiving devices in the handpiece, a tensioning device is expediently provided which is held in its rest position by a spring force. This results in a relatively low outlay in construction terms for the tensioning of the receiving devices.
The tensioning device in question can advantageously be actuated by a wire arrangement. This affords the advantage of a particularly simple tensioning device.
In the tensioned state, the receiving devices are preferably held on holding parts by locking catches, of which the holding part which can be brought into contact with the locking catch of the receiving device for the cutting device is designed as a release mechanism in the handpiece, and the locking part of the receiving device serving to receive the hollow needle is held so securely that it is released by the first-mentioned receiving device only when the latter is situated a short distance before or on its stop buffer.
This results in the advantage of a relatively low outlay in construction terms for the stated lock connections.
A tube arrangement for receiving the biopsy needle is provided at the distal end of the handpiece, and the handpiece can be fitted with said tube arrangement on the endoscope. This results in the advantage of a particularly straightforward and simple connection of the handpiece to the endoscope.
The tube arrangement is expediently made up of an outer tube and of an inner tube, through which the biopsy needle can be guided, and between these two tubes there is an extendable intermediate tube, through whose distal end the biopsy needle can be guided. By means of this measure, the handpiece with said tube arrangement can advantageously be brought to a desired length in each case upon application to the endoscope.
The cutting device of the biopsy needle is preferably designed as a stylet, which affords the advantage that particularly effective cutting can be performed with the biopsy needle.
The hollow needle of the biopsy needle is expediently formed by a very thin-walled textile tubing of synthetic material, and a protective tubing surrounding the biopsy needle is also expediently formed by a textile tubing of synthetic material.
In this connection, it has proven particularly advantageous if the textile tubing is in each case designed in such a way that its surfaces have a textile-like structure. This results in a relatively low frictional resistance between the individual parts of the biopsy needle, so that the latter can be used without difficulty even when it has a considerable length in the region of over 1 m.
The invention is explained in greater detail below with reference to drawings, in which:
Fig. 1 shows a sectional view of a tube arrangement which can be used in the device according to the invention.
Fig. 2 shows, in a diagrammatic sectional view, the basic structure of a handpiece of the device according to the invention, in the untensioned state.
Fig. 3 shows, in a diagrammatic sectional view, the handpiece shown in Fig. 2, here in the tensioned state.
Fig. 4 shows a biopsy needle with holding parts which can be received in the handpiece.
Fig. 5 shows the distal end of the biopsy needle in an enlarged view.
Fig. 6 shows a front view of a holding part which can be used in practice-.
Fig. 7 shows a cross-sectional side view of the holding part shown in Fig. 6.
Fig. 8 shows a plan view of the holding part represented in Fig. 6 and Fig. 7, here together with a receiving device.
In Fig. 1, a tube arrangement 1 is shown which can be used in the device according to the invention in conjunction with the handpiece which will be described below. The tube arrangement 1 is made up of an outer tube 2 and of an inner tube 3 with a through-opening for a biopsy needle. Both tubes are here designed as metal tubes for which aluminum is preferably used and through which a biopsy needle can be guided. At its right-hand end, the inner tube 3 is embedded with a plate-shaped part 5 in the end part 6 of the outer tube 2, which likewise has a through-opening for the stated biopsy needle. At its distal front end, the inner tube 3 has O-rings which are received in grooves and via which an intermediate tube 7 further provided between the outer tube 2 and the inner tube 3 is guided on this inner tube 3. The intermediate tube 7 is guided with a plunger part 8 in the outer tube 2; at its distal end it has an actuating part 9 which likewise has a through-opening for the stated biopsy needle, and with which the tube arrangement 1 can be applied to an endoscope.
As can be seen from Fig. 1, the intermediate tube 7 can be guided out of the tube arrangement 1, its exact guidance being ensured at all times. Thus, a biopsy needle guided through the tube arrangement is likewise at all times guided effectively and safely, even when the intermediate tube 7 is withdrawn from the tube arrangement 1.
Fig. 2 shows the already mentioned handpiece 10 in a diagrammatic sectional view. The tube arrangement represented in Fig. 1 can be applied to the left-hand end face 11 of the handpiece 10, as is indicated by the dot-and-dash line between Fig. 1 and Fig. 2. This handpiece is used to receive -a hollow needle, belonging to a biopsy needle, and a cutting device, guided in said hollow needle, at the proximal ends in receiving devices 12 and 13, as will be explained with reference to Figures 4 and 5. At this point it should be noted that the tube arrangement explained with reference to Fig. 1 and the handpiece are connected to each other in such a way that the biopsy needle, received by the handpiece, and the aforementioned through-passages are in alignment with each other.
The receiving devices 12 and 13 sit at a certain distance from etch other on an adjusting rod 14 which, at its right-hand end, bears a threaded part 15 which is received by a threaded opening 16 in the handpiece 10. Said adjusting rod 14 can be rotated by means of an adjusting wheel 17.
Provided on the aforementioned adjusting rod 14 there are two pressure springs 18 and 19 which belong individually to said receiving devices 12 and 13, respectively, according to Fig. 2, and which press these receiving devices 12 and 13, respectively, leftward in each case toward a stop buffer 20, 21, respectively. These stop buffers 20, 21 which are made of an elastic material, in particular plastic, are fixed in their relative position to each other. They can only be displaced together with the adjusting rod 14, and thus with the receiving devices 12 and 13, when the adjusting rod 14 is rotated via the adjusting wheel 17.
An indicator part 22 is connected in the present case to the stop buffer 20, which indicator part 22 ends with its indicator tip in the area of an adjustment scale 23 which is provided in particular on the handpiece 10 itself. The indicator part 22 protrudes through a slit 24 provided in the handpiece 10.
Also belonging to the handpiece according to Fig. 2 is a tensioning device 25 which is able to lie with locking noses 26 and 27 on stops 28 and 29, respectively, which are connected to the receiving devices 12 and 13, respectively. A tension spring 30 draws the tensioning device 25 leftward into its rest position. By means of a wire arrangement 31, said tensioning device according to Fig. 2 can be pulled to the right and thus makes it possible to bring the receiving devices 12, 13 into their tensioned state, as is illustrated in Fig. 3.
According to Fig. 3, a locking catch 32 _ 7 _ connected to the receiving device 12 lies on the stop buffer 21 for the receiving device 13, and a locking catch 33 connected to the receiving device 13 lies on a holding part 34 which is here likewise designed as a locking catch and which can be locked by means of an actuating button 35 which is pressed by a spring 36 into its upper position. The abovementioned pressure springs 18 and 19 are thus compressed considerably, which means that the handpiece or to be more exact its receiving devices 12, 13 are tensioned. When the actuating button 35 is depressed, the lock connection between the locking parts 33, 34 is first released and the receiving device 13 is moved rapidly leftward by the spring force of the spring 19. A short distance before its stop buffer 21, or on this stop buffer, the receiving device 13 releases the locking catch 32 so that the receiving device 12 is then moved rapidly leftward by the spring force of the spring 18. As has been mentioned above, this forceful and rapid movement is needed for a biopsy needle which is to be introduced into firm tissue.
Fig. 4 shows such a biopsy needle 37. Said biopsy needle 37 has an inner part 38 which is designed as a cutting device and which at its proximal end is received by a holding device or a separate holding part 39 which can be received by the receiving device 13 of the handpiece 10. The biopsy needle 37 also includes a hollow needle 40 which is received by a separate holding part 41. This holding part 41 can be received by the receiving device 12 of the handpiece 10. Fig. 4 also shows a protective tube or protective tubing 42 which surrounds the biopsy needle.
Fig. 5 shows the distal end of the biopsy needle 37 in an enlarged partial view. The cutting device 38 is here designed as a stylet, behind which an area of reduced material thickness is provided. The stylet or cutting device is surrounded by a thin-walled textile tubing of synthetic material which forms the hollow needle 40 and which is in turn surrounded by a textile tubing forming the protective tubing 42. The textile tubings are preferably made of a nylon material (protected brand named with a pronounced textile structure. By means of this textile structure configuration of said textile tubings, the friction of the individual elements of the biopsy needle is so low that said biopsy needle can be used without difficulty over a length of more than 1 m. It should be noted here that said biopsy needle cannot just be used in conjunction with the aforementioned handpiece, but can also be used generally.
Figures 6, 7 and 8 show a practically configured holding part 50 which can be used as holding part 39 or 41 according to Fig. 4. In Figures 6 through 8, a larger scale has been chosen compared with the situation represented in Fig. 4.
Figure 6 shows said holding part 50 in a front view, Fig. 7 shows an associated cross-sectional side view, and Fig. 8 shows the holding part 50 in a plan view together with a receiving device 54. According to Figures 6 and 7, said holding part 50 has a through-opening 51 for receiving the cutting device 38 and hollow needle 40 of the biopsy needle according to Figures 4 and 5.
As can be seen from Figures 6 through 8, the holding part 50 is formed by a longitudinally symmetrical shaped body which has pronounced bulges 52 provided at is ends and extending in its longitudinal direction and, lying between these bulges, gentle central bulges 53 which are set back in relation to the bulges 52 provided at the ends . The transition between the bulges 52 and 53 runs smoothly on the respective side of the shaped body 50. The bulges 52, 53 preferably in each case correspond to a circular cross section whose center lies outside the longitudinal center of the associated shaped body. The diameter of the respective central bulge 53 can be about 2/3 of the diameter of each of the bulges 52 provided at the ends.
It is also clear from Fig. 8 that the holding g part 50 with its bulges 52, 53 is received with a form-fit by a receiving device 54; this receiving device 54 corresponds to each of- the receiving devices 12, 13 according to Figures 2 and 3.
The shaped body also has, on its front and rear end faces, set-back gripping sides, as can be seen clearly from Fig. 7. Body parts of triangular cross section are provided in the area of these gripping sides, on the underside, and this, in conjunction with the abovementioned bulges 52, 53, results in very good force distribution when using the holding parts thus designed and the corresponding receiving devices of complementary design.
It is also advantageous if the hollow needle . _ 2 _ and the cutting device are in each case connected to a separate holding part which is received in its own receiving device. By means of this measure, it is possible for the elements forming the biopsy needle to be accommodated in a very simple manner in the device according to the invention.
The abovementioned holding parts are preferably in each case formed by a longitudinally symmetrical shaped body which has pronounced bulges provided at is ends and extending in its longitudinal direction and, lying between these bulges, a gentle central bulge which is set back in relation to the bulges provided at the ends; the transition between the bulges runs smoothly on the respective side of the shaped body, and the receiving devices are each shaped in such a way that they receive the respective shaped bodies with a form-fit. This measure affords the advantage that the forces which occur when using the device according to the invention, as a result of the action of the spring force, can be taken up very effectively in the receiving devices, with the result that no excessive local stresses can arise.
It is expedient for the receiving devices to be allocated stop buffers which can be adjusted in the axial direction of the biopsy needle together with said receiving devices while maintaining their mutual spacing from each other. This advantageously ensures minimal shudder impact on the handpiece and thus on the endoscope connected to the latter. The stop buffers are expediently made of an elastic material, in particular plastic.
An indicator part is expediently connected to one of the stop buffers or to a support part bearing this, the indicator tip of the indicator part ending alongside an adjustment scale provided in particular on the handpiece. In this way, the length of extension of the biopsy needle can advantageously be set with precision.
In order to tension the receiving devices in the handpiece, a tensioning device is expediently provided which is held in its rest position by a spring force. This results in a relatively low outlay in construction terms for the tensioning of the receiving devices.
The tensioning device in question can advantageously be actuated by a wire arrangement. This affords the advantage of a particularly simple tensioning device.
In the tensioned state, the receiving devices are preferably held on holding parts by locking catches, of which the holding part which can be brought into contact with the locking catch of the receiving device for the cutting device is designed as a release mechanism in the handpiece, and the locking part of the receiving device serving to receive the hollow needle is held so securely that it is released by the first-mentioned receiving device only when the latter is situated a short distance before or on its stop buffer.
This results in the advantage of a relatively low outlay in construction terms for the stated lock connections.
A tube arrangement for receiving the biopsy needle is provided at the distal end of the handpiece, and the handpiece can be fitted with said tube arrangement on the endoscope. This results in the advantage of a particularly straightforward and simple connection of the handpiece to the endoscope.
The tube arrangement is expediently made up of an outer tube and of an inner tube, through which the biopsy needle can be guided, and between these two tubes there is an extendable intermediate tube, through whose distal end the biopsy needle can be guided. By means of this measure, the handpiece with said tube arrangement can advantageously be brought to a desired length in each case upon application to the endoscope.
The cutting device of the biopsy needle is preferably designed as a stylet, which affords the advantage that particularly effective cutting can be performed with the biopsy needle.
The hollow needle of the biopsy needle is expediently formed by a very thin-walled textile tubing of synthetic material, and a protective tubing surrounding the biopsy needle is also expediently formed by a textile tubing of synthetic material.
In this connection, it has proven particularly advantageous if the textile tubing is in each case designed in such a way that its surfaces have a textile-like structure. This results in a relatively low frictional resistance between the individual parts of the biopsy needle, so that the latter can be used without difficulty even when it has a considerable length in the region of over 1 m.
The invention is explained in greater detail below with reference to drawings, in which:
Fig. 1 shows a sectional view of a tube arrangement which can be used in the device according to the invention.
Fig. 2 shows, in a diagrammatic sectional view, the basic structure of a handpiece of the device according to the invention, in the untensioned state.
Fig. 3 shows, in a diagrammatic sectional view, the handpiece shown in Fig. 2, here in the tensioned state.
Fig. 4 shows a biopsy needle with holding parts which can be received in the handpiece.
Fig. 5 shows the distal end of the biopsy needle in an enlarged view.
Fig. 6 shows a front view of a holding part which can be used in practice-.
Fig. 7 shows a cross-sectional side view of the holding part shown in Fig. 6.
Fig. 8 shows a plan view of the holding part represented in Fig. 6 and Fig. 7, here together with a receiving device.
In Fig. 1, a tube arrangement 1 is shown which can be used in the device according to the invention in conjunction with the handpiece which will be described below. The tube arrangement 1 is made up of an outer tube 2 and of an inner tube 3 with a through-opening for a biopsy needle. Both tubes are here designed as metal tubes for which aluminum is preferably used and through which a biopsy needle can be guided. At its right-hand end, the inner tube 3 is embedded with a plate-shaped part 5 in the end part 6 of the outer tube 2, which likewise has a through-opening for the stated biopsy needle. At its distal front end, the inner tube 3 has O-rings which are received in grooves and via which an intermediate tube 7 further provided between the outer tube 2 and the inner tube 3 is guided on this inner tube 3. The intermediate tube 7 is guided with a plunger part 8 in the outer tube 2; at its distal end it has an actuating part 9 which likewise has a through-opening for the stated biopsy needle, and with which the tube arrangement 1 can be applied to an endoscope.
As can be seen from Fig. 1, the intermediate tube 7 can be guided out of the tube arrangement 1, its exact guidance being ensured at all times. Thus, a biopsy needle guided through the tube arrangement is likewise at all times guided effectively and safely, even when the intermediate tube 7 is withdrawn from the tube arrangement 1.
Fig. 2 shows the already mentioned handpiece 10 in a diagrammatic sectional view. The tube arrangement represented in Fig. 1 can be applied to the left-hand end face 11 of the handpiece 10, as is indicated by the dot-and-dash line between Fig. 1 and Fig. 2. This handpiece is used to receive -a hollow needle, belonging to a biopsy needle, and a cutting device, guided in said hollow needle, at the proximal ends in receiving devices 12 and 13, as will be explained with reference to Figures 4 and 5. At this point it should be noted that the tube arrangement explained with reference to Fig. 1 and the handpiece are connected to each other in such a way that the biopsy needle, received by the handpiece, and the aforementioned through-passages are in alignment with each other.
The receiving devices 12 and 13 sit at a certain distance from etch other on an adjusting rod 14 which, at its right-hand end, bears a threaded part 15 which is received by a threaded opening 16 in the handpiece 10. Said adjusting rod 14 can be rotated by means of an adjusting wheel 17.
Provided on the aforementioned adjusting rod 14 there are two pressure springs 18 and 19 which belong individually to said receiving devices 12 and 13, respectively, according to Fig. 2, and which press these receiving devices 12 and 13, respectively, leftward in each case toward a stop buffer 20, 21, respectively. These stop buffers 20, 21 which are made of an elastic material, in particular plastic, are fixed in their relative position to each other. They can only be displaced together with the adjusting rod 14, and thus with the receiving devices 12 and 13, when the adjusting rod 14 is rotated via the adjusting wheel 17.
An indicator part 22 is connected in the present case to the stop buffer 20, which indicator part 22 ends with its indicator tip in the area of an adjustment scale 23 which is provided in particular on the handpiece 10 itself. The indicator part 22 protrudes through a slit 24 provided in the handpiece 10.
Also belonging to the handpiece according to Fig. 2 is a tensioning device 25 which is able to lie with locking noses 26 and 27 on stops 28 and 29, respectively, which are connected to the receiving devices 12 and 13, respectively. A tension spring 30 draws the tensioning device 25 leftward into its rest position. By means of a wire arrangement 31, said tensioning device according to Fig. 2 can be pulled to the right and thus makes it possible to bring the receiving devices 12, 13 into their tensioned state, as is illustrated in Fig. 3.
According to Fig. 3, a locking catch 32 _ 7 _ connected to the receiving device 12 lies on the stop buffer 21 for the receiving device 13, and a locking catch 33 connected to the receiving device 13 lies on a holding part 34 which is here likewise designed as a locking catch and which can be locked by means of an actuating button 35 which is pressed by a spring 36 into its upper position. The abovementioned pressure springs 18 and 19 are thus compressed considerably, which means that the handpiece or to be more exact its receiving devices 12, 13 are tensioned. When the actuating button 35 is depressed, the lock connection between the locking parts 33, 34 is first released and the receiving device 13 is moved rapidly leftward by the spring force of the spring 19. A short distance before its stop buffer 21, or on this stop buffer, the receiving device 13 releases the locking catch 32 so that the receiving device 12 is then moved rapidly leftward by the spring force of the spring 18. As has been mentioned above, this forceful and rapid movement is needed for a biopsy needle which is to be introduced into firm tissue.
Fig. 4 shows such a biopsy needle 37. Said biopsy needle 37 has an inner part 38 which is designed as a cutting device and which at its proximal end is received by a holding device or a separate holding part 39 which can be received by the receiving device 13 of the handpiece 10. The biopsy needle 37 also includes a hollow needle 40 which is received by a separate holding part 41. This holding part 41 can be received by the receiving device 12 of the handpiece 10. Fig. 4 also shows a protective tube or protective tubing 42 which surrounds the biopsy needle.
Fig. 5 shows the distal end of the biopsy needle 37 in an enlarged partial view. The cutting device 38 is here designed as a stylet, behind which an area of reduced material thickness is provided. The stylet or cutting device is surrounded by a thin-walled textile tubing of synthetic material which forms the hollow needle 40 and which is in turn surrounded by a textile tubing forming the protective tubing 42. The textile tubings are preferably made of a nylon material (protected brand named with a pronounced textile structure. By means of this textile structure configuration of said textile tubings, the friction of the individual elements of the biopsy needle is so low that said biopsy needle can be used without difficulty over a length of more than 1 m. It should be noted here that said biopsy needle cannot just be used in conjunction with the aforementioned handpiece, but can also be used generally.
Figures 6, 7 and 8 show a practically configured holding part 50 which can be used as holding part 39 or 41 according to Fig. 4. In Figures 6 through 8, a larger scale has been chosen compared with the situation represented in Fig. 4.
Figure 6 shows said holding part 50 in a front view, Fig. 7 shows an associated cross-sectional side view, and Fig. 8 shows the holding part 50 in a plan view together with a receiving device 54. According to Figures 6 and 7, said holding part 50 has a through-opening 51 for receiving the cutting device 38 and hollow needle 40 of the biopsy needle according to Figures 4 and 5.
As can be seen from Figures 6 through 8, the holding part 50 is formed by a longitudinally symmetrical shaped body which has pronounced bulges 52 provided at is ends and extending in its longitudinal direction and, lying between these bulges, gentle central bulges 53 which are set back in relation to the bulges 52 provided at the ends . The transition between the bulges 52 and 53 runs smoothly on the respective side of the shaped body 50. The bulges 52, 53 preferably in each case correspond to a circular cross section whose center lies outside the longitudinal center of the associated shaped body. The diameter of the respective central bulge 53 can be about 2/3 of the diameter of each of the bulges 52 provided at the ends.
It is also clear from Fig. 8 that the holding g part 50 with its bulges 52, 53 is received with a form-fit by a receiving device 54; this receiving device 54 corresponds to each of- the receiving devices 12, 13 according to Figures 2 and 3.
The shaped body also has, on its front and rear end faces, set-back gripping sides, as can be seen clearly from Fig. 7. Body parts of triangular cross section are provided in the area of these gripping sides, on the underside, and this, in conjunction with the abovementioned bulges 52, 53, results in very good force distribution when using the holding parts thus designed and the corresponding receiving devices of complementary design.
Claims (8)
1. A device for receiving and actuating a biopsy needle, with a handpiece which is equipped to receive a hollow needle (40), associated with the biopsy needle (37), and a cutting device (38), guided in said hollow needle (40), at the proximal ends in receiving devices (12, 13) which can be tensioned by a spring force in such a way that, in the tensioned state, the hollow needle (40) and the cutting device (38) are drawn a distance into the handpiece (10), and, of the tensioned receiving devices (12, 13), the receiving device (13) provided for receiving the cutting device (38) can be released before the receiving device (12) provided for receiving the hollow needle (40), characterized in that the handpiece (10) can be applied with its distal end to an endoscope by means of tube arrangement (1) which is provided for receiving the biopsy needle (37) and which is made up of an outer tube (2), an inner tube (3), and, between these two tubes (2, 3), an extendable intermediate tube (7) through whose distal end the biopsy needle (37) can be guided.
2. The device as claimed in claim 1, characterized in that the hollow needle (40) and the cutting device (38) of the biopsy needle (37) are in each case connected to a separate holding part (41, 39) which is received in its own receiving device (12, 13), in that the holding parts (41, 39) are in each case formed by a longitudinally symmetrical shaped body (50) which has pronounced bulges (52) provided at its ends and extending in its longitudinal direction and, lying between these bulges, a gentle central bulge (53) which is set back in relation to the bulges (52) provided at the ends, in that the transition between the bulges (52, 53) runs smoothly on the respective side of the shaped body (50), and in that the receiving devices (12, 13; 54) are each shaped in such a way that they receive the respective shaped bodies (50) with a form-fit.
3. The device as claimed in claim 2, characterized in that the receiving devices (12, 13) are allocated stop buffers (20, 21) which can be adjusted in the axial direction of the biopsy needle (37) together with said receiving devices (12, 13) while maintaining their mutual spacing from each other, and in that an indicator part (22) is connected to one of the stop buffers (20, 21) or to a support part (14) bearing this, the indicator tip of the indicator part (22) ending alongside an adjustment scale (23) provided in particular on the handpiece (10).
4. The device as claimed in claim 2 or 3, characterized in that, in order to tension the receiving devices (12, 13) in the handpiece (10), a tensioning device (25) is provided which is held in its rest position by a spring force, and in that the tensioning device (25) can be actuated by a wire arrangement (31).
5. The device as claimed in one of claims 2 through 4, characterized in that, in the tensioned state, the receiving devices (12, 13) are held on holding parts (21, 34) by locking catches (32, 33), of which the holding part (34) which can be brought into contact with the locking catch (33) of the receiving device (13) for the cutting device (38) is designed as a release mechanism (35) in the handpiece (10), and in that the locking part (32) of the receiving device (12) serving to receive the hollow needle (40) is held so securely that it is released by the first-mentioned receiving device (13) only when the latter is situated a short distance before or on its stop buffer (21).
6. The device as claimed in one of claims 1 through 5, characterized in that the hollow needle (40) of the biopsy needle (37) is formed by a very thin-walled textile tubing of synthetic material.
7. The device as claimed in claim 6, characterized in that a protective tubing (42) surrounding the biopsy needle (37) is formed by a textile tubing of synthetic material.
8. The device as claimed in claim 6 or 7, characterized in that the textile tubing (40, 42) is in each case designed in such a way that its surfaces have a textile-like structure.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19840978.8 | 1998-09-08 | ||
| DE1998140978 DE19840978A1 (en) | 1998-09-08 | 1998-09-08 | Device for receiving and actuating a biopsy needle |
| PCT/DE1999/002841 WO2000013592A1 (en) | 1998-09-08 | 1999-09-08 | Device for receiving and actuating a biopsy needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2340376A1 true CA2340376A1 (en) | 2000-03-16 |
Family
ID=7880218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002340376A Abandoned CA2340376A1 (en) | 1998-09-08 | 1999-09-08 | Device for receiving and actuating a biopsy needle |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1112027A1 (en) |
| JP (1) | JP2002524127A (en) |
| CA (1) | CA2340376A1 (en) |
| DE (1) | DE19840978A1 (en) |
| WO (1) | WO2000013592A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10390838B1 (en) | 2014-08-20 | 2019-08-27 | Pneumrx, Inc. | Tuned strength chronic obstructive pulmonary disease treatment |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITFI20020216A1 (en) * | 2002-11-07 | 2004-05-08 | Aurelio Gironi | AGOBIOPTIC COLLECTION DEVICE. |
| US7775968B2 (en) | 2004-06-14 | 2010-08-17 | Pneumrx, Inc. | Guided access to lung tissues |
| EP1781182B1 (en) | 2004-07-08 | 2019-11-13 | PneumRx, Inc. | Pleural effusion treatment device |
| US7766891B2 (en) | 2004-07-08 | 2010-08-03 | Pneumrx, Inc. | Lung device with sealing features |
| JP4874259B2 (en) | 2004-11-23 | 2012-02-15 | ヌームアールエックス・インコーポレーテッド | Steerable device for accessing the target site |
| DE102005062740B3 (en) * | 2005-12-22 | 2007-07-19 | INSTITUT FüR MIKROTECHNIK MAINZ GMBH | Biopsy needle set, gun and biopsy device for the minimally invasive removal of tissue samples |
| US9402633B2 (en) | 2006-03-13 | 2016-08-02 | Pneumrx, Inc. | Torque alleviating intra-airway lung volume reduction compressive implant structures |
| US8157837B2 (en) | 2006-03-13 | 2012-04-17 | Pneumrx, Inc. | Minimally invasive lung volume reduction device and method |
| US8888800B2 (en) | 2006-03-13 | 2014-11-18 | Pneumrx, Inc. | Lung volume reduction devices, methods, and systems |
| US8192353B2 (en) * | 2007-10-05 | 2012-06-05 | Tyco Healthcare Group Lp | Visual obturator |
| US8632605B2 (en) | 2008-09-12 | 2014-01-21 | Pneumrx, Inc. | Elongated lung volume reduction devices, methods, and systems |
| EP2432422A4 (en) | 2009-05-18 | 2018-01-17 | PneumRx, Inc. | Cross-sectional modification during deployment of an elongate lung volume reduction device |
| CN106137273A (en) * | 2016-08-06 | 2016-11-23 | 上海市同济医院 | A kind of readable endoscope biopsyforceps |
| WO2022226944A1 (en) * | 2021-04-29 | 2022-11-03 | 苏州市立普医疗科技有限公司 | Full-automatic puncture needle linked excitation device and method, and full-automatic puncture needle |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4249541A (en) | 1979-04-26 | 1981-02-10 | David S. Pratt | Biopsy device |
| SE456886B (en) * | 1986-02-19 | 1988-11-14 | Radiplast Ab | DEVICE FOR TAPE SAMPLING WITH A NATIONAL DISPENSER |
| US4763667A (en) * | 1986-09-19 | 1988-08-16 | Microvasive, Inc. | Tissue-penetrating catheter device |
| DE3909575C1 (en) * | 1989-03-23 | 1990-08-09 | Feinwerkbau Westinger & Altenburger Gmbh & Co Kg, 7238 Oberndorf, De | Biopsy device for one-handed operation |
| US5535755A (en) * | 1989-07-22 | 1996-07-16 | Heske; Norbert | Tissue sampler |
| US5156160A (en) * | 1990-06-22 | 1992-10-20 | Bennett Lavon L | Adjustable biopsy device capable of controlling tissue sample size collected thereby |
| DE4419894A1 (en) * | 1994-06-07 | 1995-12-14 | Gip Medizin Technik Gmbh | Endoscopic puncture needle with elastic catheter |
| DE29708149U1 (en) * | 1997-05-07 | 1997-09-25 | Binmoeller Kenneth F Dr | Biopsy device |
-
1998
- 1998-09-08 DE DE1998140978 patent/DE19840978A1/en not_active Withdrawn
-
1999
- 1999-09-08 CA CA002340376A patent/CA2340376A1/en not_active Abandoned
- 1999-09-08 JP JP2000568403A patent/JP2002524127A/en active Pending
- 1999-09-08 WO PCT/DE1999/002841 patent/WO2000013592A1/en not_active Application Discontinuation
- 1999-09-08 EP EP99955675A patent/EP1112027A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10390838B1 (en) | 2014-08-20 | 2019-08-27 | Pneumrx, Inc. | Tuned strength chronic obstructive pulmonary disease treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000013592A1 (en) | 2000-03-16 |
| EP1112027A1 (en) | 2001-07-04 |
| JP2002524127A (en) | 2002-08-06 |
| DE19840978A1 (en) | 2000-03-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |