CN115153527A - push device - Google Patents

Abstract

The present disclosure relates to a pushing device, which includes: the conveying assembly comprises a shell, a conveying assembly and a connecting piece, wherein the shell is provided with a supporting main body, the supporting main body is provided with two clamping arms, and the conveying assembly is in releasable clamping connection with the two clamping arms; the transport assembly is configured to be movable within the housing between a proximal position and a distal position; the connecting piece and the cooperation of casing, the connecting piece has two links and two linking arms, and two linking arms are connected with the joint arm that is located the offside respectively, and when the connecting piece warp because of the link receives the extrusion, the linking arm removed so that two joint arms that gather together move dorsad along the direction of pressure. In this case, the medical device can be moved to the skin surface by squeezing the connector, thereby facilitating the user's one-handed operation to reliably apply the medical device to the skin.

Description

push device

This application is a divisional application of a patent application with an application date of December 30, 2019, an application number of 2019114026495, and an invention title of a push device for medical devices.

technical field

The present disclosure generally relates to a push device.

Background technique

For clinical diagnostics or personal health monitoring, it is sometimes necessary to insert a medical device containing an analyte sensor under the skin to detect the concentration of a specific component (eg, glucose, salt, lactate, oxygen) in tissue fluid.

In particular, for diabetic patients, it is necessary to monitor the glucose concentration of tissue fluid in real time and continuously on weekdays to reduce and reduce the occurrence of complications such as hypoglycemia and hyperglycemia in insulin-dependent diabetic patients. Usually when the glucose concentration in the blood begins to decrease, the glucose concentration in the interstitial fluid decreases before the glucose in the blood, thereby indicating that the decrease in the glucose concentration in the interstitial fluid can predict the imminent hypoglycemia.

Analyte monitoring devices that are convenient for users to monitor the concentration of a specific component in interstitial fluid in real time on weekdays usually include an analyte sensor inserted under the skin in contact with the interstitial fluid and a sensor control device attached to the skin. Also, the analyte monitoring device is usually placed on the upper arm. In order to place the analyte monitoring device in the proper working position, the aid of a pusher is usually required. That is, the pusher needs to insert the analyte sensor under the skin while applying the sensor control device to the skin. Such push devices usually require the user to operate with one hand, so the push devices are required to be simple to operate, safe, and reliable in insertion and application. Additionally, to insert the analyte sensor below the skin, a needle tip is typically used. However, the needle tip is often a fear of pain, so such push devices often need to hide the needle tip from the user. Such push devices currently on the market often have complicated operations, uncontrollable push force, offset position during insertion, and improper insertion and application of the analyte monitoring device, resulting in poor user experience and unreliable monitoring results.

SUMMARY OF THE INVENTION

The present invention has been made in view of the above-mentioned state of the prior art, and its purpose is to provide a pusher device that is simple to operate, safe, and reliable for insertion and application of medical instruments.

To this end, the present invention provides a pusher for a medical device comprising: a housing having a distal surface proximate to a skin surface; a delivery assembly configured to be in a proximal position within the housing and the distal position, the transport assembly is snap-fitted with the housing, the transport assembly includes an engaging member for engaging the medical instrument; a connecting member cooperates with the housing and has a A release mechanism for releasing the snap connection between the transport assembly and the housing; a touch piece, which is linked with the release mechanism of the connecting piece, by touching the touch piece, the transport assembly is released from the shell body release; and a push drive disposed between the transport assembly and the housing to move the transport assembly from the proximal position to the desired position when the transport assembly is released from the housing the remote location.

In the present invention, the user presses the touch piece to link with the connecting piece to release the snap connection of the housing to the transport assembly, and the transport assembly pushes the medical instrument to the distal surface located on the skin surface under the push of the push drive member. In this case, by pressing the touch piece, the medical device can be moved to the skin surface under a preset thrust, so that it is convenient for the user to operate the medical device with one hand and reliably attach the medical device to the skin. .

In addition, in the push device according to the present invention, optionally, the medical device includes an analyte sensor in contact with the subcutaneous tissue fluid and a sensor control device located on the skin surface. In this case, the analyte sensor can monitor the concentration of a specific component in the interstitial fluid, and transmit the monitoring data to the display instrument through the sensor control device, thereby making it convenient for users to monitor the status of certain indicators in real time on weekdays.

In addition, in the push device according to the present invention, optionally, the monitoring object of the analyte sensor is glucose. Therefore, it is convenient for the user to monitor the glucose concentration in the body in real time on weekdays.

In addition, in the pushing device according to the present invention, optionally, the pushing driving member has springs whose ends are respectively in contact with the housing and the conveying assembly. In this case, after the snap of the housing on the delivery assembly is released, the delivery member can move from the proximal position to the distal position under the urging force of the spring, thereby enabling the medical device to be applied to the skin surface .

In addition, in the pushing device according to the present invention, optionally, the pushing device further includes a needle tip support portion, which is used to support the needle tip and is configured to be able to be positioned between the proximal end position and the distal end position in the housing. The needle tip support portion is releasably coupled to the transport assembly through a coupling member. Thereby, the needle tip can be moved between the proximal and distal positions by the needle tip support.

In addition, in the pushing device according to the present invention, optionally, the pushing device further includes a retracting driving member, and the retracting driving member is provided between the conveying assembly and the needle tip support portion. In this case, after the insertion and application actions are completed, the needle tip support can be returned from the distal position to the proximal position under the drive of the retraction drive member, whereby the needle tip can be pulled out of the body.

In addition, in the pushing device according to the present invention, optionally, the retracting driving member has a spring whose two ends are respectively in contact with the conveying assembly and the needle tip support portion. In this case, after the insertion and application actions are completed, the needle tip support can be returned from the distal position to the proximal position under the urging of the spring, whereby the needle tip can be pulled out of the body.

In addition, in the pushing device according to the present invention, optionally, the housing includes a biasing member, and when the conveying assembly moves from the proximal end position to the distal end position, the biasing member is connected to the biasing member. The coupling member touches and releases the coupling of the transport assembly to the needle tip support. In this case, after the insertion and application actions are completed, the needle tip support can be automatically disengaged from the transport assembly and returned from the distal position to the proximal position under the drive of the retraction drive member, thereby allowing the needle tip to be pulled out of the body .

In addition, in the pushing device according to the present invention, optionally, the coupling member includes an elastic buckle releasably engaged with the needle tip support portion and a card engaged with the elastic buckle.

In this case, the elastic buckle under the snap of the card couples the tip support to the transport assembly, thereby enabling the needle tip support to follow the transport assembly from a proximal position to a distal position.

In addition, in the pushing device according to the present invention, optionally, the biasing member touches the card and releases the card from the elastic buckle. In some examples, the delivery assembly can be released from the tip support, whereby the biasing member can release the delivery assembly from the tip support by disengaging the card.

In addition, in the pushing device according to the present invention, optionally, when the transport assembly moves from the proximal end position to the distal end position, the engaging member releases the coupling to the medical device. In this case, the medical device can be disengaged from the delivery assembly, so that it can remain attached to the skin.

In addition, in the pushing device according to the present invention, optionally, when the needle tip supporting portion is at the proximal end position, the needle tip does not exceed the distal end surface. Thereby, the possibility of the needle tip piercing the skin surface before triggering the pushing device can be reduced.

In addition, in the pushing device according to the present invention, optionally, the needle tip is provided with a needle groove with an opening, the needle tip passes through a hole provided on the medical device, and the analyte sensor is placed in the in the needle groove. In this case, the needle tip can penetrate the subcutaneous tissue and place the analyte sensor in the subcutaneous tissue, thereby enabling more adequate contact between the analyte sensor and the interstitial fluid.

In addition, in the pushing device according to the present invention, optionally, when the needle tip support portion moves from the proximal end position to the distal end position, the needle tip is inserted below the skin surface and the analyte is inserted The sensor is placed in contact with the tissue fluid, and the sensor control device is applied to the skin surface. In this case, the analyte sensor can monitor the concentration of a specific component in the tissue fluid, and transmit the monitoring data to a display instrument that is convenient for the user to read through the sensor control device, so that the user can monitor certain indicators in real time on weekdays.

In addition, in the pushing device according to the present invention, optionally, the touch member is provided on the outer side of the housing. Therefore, it is convenient for the user to press the touch member to activate the push device.

In addition, in the pushing device according to the present invention, optionally, the connecting member is deformed under the pressing of the touching member. In this case, the latching of the transport assembly and the housing can be released, whereby the transport assembly can be moved from the proximal end position to the distal end position under the driving of the push drive member.

Description of drawings

FIG. 1 is a schematic diagram showing a pusher according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing the medical device according to the present embodiment.

FIG. 3 is a schematic diagram showing the configuration of the casing according to the present embodiment.

FIG. 4 is an exploded view showing the pusher according to the present embodiment.

FIG. 5 is a partially enlarged view showing an exploded view of the pusher according to the present embodiment.

FIG. 6 is a further exploded view showing the pusher according to the present embodiment.

FIG. 7 is an exploded view showing the transport unit according to the present embodiment.

FIG. 8 is an exploded view showing the transport assembly and the needle tip support part according to the present embodiment.

FIG. 9 is a schematic diagram showing the needle tip according to the present embodiment.

FIG. 10 is a cross-sectional view showing an initial state of the pusher according to the present embodiment.

FIG. 11 is a cross-sectional view showing the completion of the push of the push device according to the present embodiment.

12 is a cross-sectional view showing the retraction of the needle tip of the pusher according to the present embodiment.

Symbol Description:

1...pushing device, 9...medical instrument, 10...housing, 11...supporting body, 111...distal surface, 112...moving track, 113...covering portion, 114...snap arm, 12...upper cover, 13... base, 20...transport assembly, 21...transport body, 22...flange, 23...push connector, 24...coupling, 241...elastic buckle, 242...card, 25...joint, 251...joint surface, 252...protrusion, 30...connector, 40...touch, 41...button, 50...push drive, 51...spring, 60...tip support, 70...retract drive, 71...spring, 80...needle tip, 81...needle groove .

Detailed ways

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same reference numerals are assigned to the same components, and overlapping descriptions are omitted. In addition, the drawings are only schematic diagrams, and the ratios of the dimensions of the members, the shapes of the members, and the like may be different from the actual ones.

FIG. 1 is a schematic diagram showing a pusher according to an embodiment of the present invention. Fig. 1(a) is an oblique plan view showing the pusher according to the embodiment of the present invention, and Fig. 1(b) is a perspective view showing the pusher according to the embodiment of the present invention. FIG. 2 is a schematic diagram showing the medical device according to the present embodiment. FIG. 2( a ) is an oblique plan view showing the medical device according to the present embodiment, and FIG. 2( b ) is an oblique bottom view showing the medical device according to the present embodiment. FIG. 3 is a schematic diagram showing the configuration of the casing according to the present embodiment. FIG. 4 is an exploded view showing the pusher according to the present embodiment.

In this embodiment, the pushing device 1 may include a housing 10 , a conveying assembly 20 , a connecting piece 30 , a touching piece 40 and a pushing driving piece 50 . In the pusher 1 of the present embodiment, the housing 10 may have a distal surface 111 close to the skin surface; the transport assembly 20 is configured to be movable between a proximal position and a distal position within the housing 10, The transport assembly 20 is snap-fitted with the housing 10, the transport assembly 20 includes an engagement piece 25 for engaging the medical instrument 9; mechanism; the touch member 40 is linked with the release mechanism of the connecting member 30, and the transport assembly 20 is released from the housing 10 by pressing the touch member 40; Release of the transport assembly 20 from the housing 10 moves the transport assembly 20 from the proximal position to the distal position.

In the pushing device 1 according to the present embodiment, the user can press the touch member 40 to release the snap connection of the housing 10 to the transport assembly 20 , and the transport assembly 20 pushes the medical instrument 9 under the push of the push driving member 50 . to the distal surface 111 . In this case, when the distal end surface 111 is pressed against the skin surface, the medical instrument 9 can be moved to the skin surface under a preset thrust by pressing the touch member 40, so that the user can easily operate with one hand The medical device 9 can be reliably applied to the skin.

FIG. 2 is a schematic diagram showing the medical device according to the present embodiment.

(medical instruments)

In this embodiment, the medical device 9 may include an analyte sensor 91 for subsurface contact with interstitial fluid and a sensor control 92 that may be placed on the skin. In this case, the analyte sensor 91 can monitor the concentration of a specific component in the interstitial fluid, and transmit the monitoring data to the display instrument that is convenient for the user to read through the sensor control device 92, so that the user can monitor some of his own in real time on weekdays. Physiological indicators of health status.

In some examples, the monitored object of analyte sensor 91 may be glucose. Therefore, it is convenient for users to monitor the glucose concentration in the body in real time on weekdays, so as to reduce and reduce the occurrence of hypoglycemia and hyperglycemia and related complications in insulin-dependent diabetic patients.

In some examples, sensor control 92 may include aperture 921 through which needle tip 80 passes and engagement aperture 922 in coupling engagement with transport assembly 20 . Thereby, the medical instrument 9 can be coupled to the delivery assembly 20 through the engagement hole 922 .

In some examples, the skin-contacting side of the sensor control device 92 may have adhesive. Thereby, it can help the medical device 9 to stick to the skin surface by means of adhesion.

In some examples, the portion of the analyte sensor 91 exposed outside the sensor control device 92 may be in the form of a thin strip. Thereby, the analyte sensor 91 can be facilitated to be inserted under the skin more easily and to make more adequate contact with the tissue fluid.

In some examples, the sensor controls 92 may be block-shaped. Therefore, it can be more conveniently matched with the square inner cavity of the base 13 of the housing 10 . However, the shape of the sensor control device 92 is not limited to this, and the sensor control device 92 may also have a disc shape, a triangular shape or an irregular shape. In other examples, the sensor control device 92 may have a shape that mates with the interior cavity of the base 13 of the housing 10 .

(case)

FIG. 3 is a schematic diagram showing the configuration of the casing according to the present embodiment. FIG. 4 is an exploded view showing the pusher according to the present embodiment. FIG. 5 is a partially enlarged view showing an exploded view of the pusher according to the present embodiment.

As shown in FIGS. 3 and 4 , in this embodiment, the housing 10 may include a support body 11 , an upper cover 12 and a base 13 . Therefore, the block processing and assembly of the casing 10 can be facilitated, which is beneficial to the reduction of the manufacturing cost. In other examples, the housing 10 may also be integrally formed. Thereby, the pusher 1 can have a relatively stable structure.

In this embodiment, the support body 11 can accommodate the transport assembly 20 and has a movement track 112 provided for the transport assembly 20 and a covering portion 113 covering the base 13 . Specifically, one end of the motion track 112 is connected with the upper cover 12 , and the other end is communicated with the covering portion 113 covering the base 13 . Thereby, movement of the transport assembly 20 between the proximal position and the distal surface 111 within the housing 10 can be facilitated. In some examples, the motion track 112 has a more elongated shape than the cladding portion 113 . That is, when viewed on a horizontal plane perpendicular to the length direction of the moving track 112 , the length and width of the moving track 112 are both smaller than the projected length and width of the cladding portion 113 on the horizontal plane. In this way, the space occupied by the moving rail 112 can be reduced and it is convenient for the touch member 40 to cover it.

In this embodiment, the support body 11 may include a snap arm 114 disposed on the motion track 112 . The clamping arm 114 can be releasably clamped with the flange 22 of the transport assembly 20 , and the clamping arm 114 can be clamped with the connector 30 . In this case, the deformation of the connecting member 30 can cause the two snap arms 114 to open to release the snap of the snap arms 114 and the flange 22, thereby facilitating the movement of the transport assembly 20 from the proximal position to the distal position . Specifically, the connecting piece 30 is clamped on the clamping arm 114 , and the clamping arms 114 are brought together to clamp the flange 22 . When the connecting piece 30 is subjected to pressure from both sides, the connecting piece 30 drives the clamping arm 114 The two sides are separated so that the flange 22 is released from the support of the clip arm 114 .

In this embodiment, the engaging arm 114 can disengage the flange 22 under the pushing of the connecting member 30 . In this case, the transport assembly 20 is disengaged from the snap connection of the housing 10 and moved from the proximal end position to the distal end position under the action of the push drive member 50 .

In the present embodiment, the support body 11 may further include a distal surface 111, wherein the distal surface 111 is capable of skin surface contact. Thereby, it can help to define where the medical device 9 is placed on the skin surface.

In this embodiment, the upper cover 12 may be connected to the spring 51 . In this case, the spring 51 may be located between the upper cover 12 and the conveying assembly 20 , whereby the spring 51 can be supported to generate an elastic force to the conveying assembly 20 .

In this embodiment, the base 13 can accommodate the medical instrument 9 . Thereby, it can help to prevent the medical instrument 9 from being damaged by being touched by a foreign object.

In this embodiment, the base 13 may have a cavity whose cross-sectional shape matches the shape of the medical device 9 . Thereby, the medical device 9 can be better protected.

In some examples, the materials constituting the parts of the housing 10 may be selected from at least one of plastic, rubber, and metal. In some examples, the materials that make up the parts of housing 10 may be selected from plastics. In some examples, the materials making up the parts of the housing 10 may be selected from at least one of ABS, POM, and nylon. In some examples, the parts making up the housing 10 may be injection molded from plastic. Thereby, the rigidity of the housing 10 can be improved and the manufacturing cost can be reduced.

(touch pieces)

In this embodiment, the touch member 40 may be provided outside the housing 10 (see FIG. 4 ). In this embodiment, the touch member 40 may include a button 41, and the button 41 may be elastically deformed. In some examples, there may be two buttons 41 . Therefore, it is convenient for the user to operate the push device 1 with one hand, that is, the user can press the button 41 with one hand to start the push device 1 .

In some examples, the touch button 41 is provided corresponding to the connector 30 . Thus, the connecting member 30 can be deformed by pressing the touch button 41 .

In some examples, the materials constituting the parts of the touch member 40 may be selected from at least one of plastic, rubber, and metal. In some examples, the materials that make up the parts of the touch member 40 may be selected from plastics. In some examples, the material constituting the parts of the touch member 40 may be selected from at least one of ABS, POM, and nylon. In some examples, the parts making up the touch member 40 may be injection molded from plastic. Thereby, the rigidity of the touch piece 40 can be improved and the manufacturing cost can be reduced.

(connector)

In this embodiment, the connecting member 30 can be deformed under the pressing of the contact member 40 to release the clamping connection between the transport assembly 20 and the housing 10 . Thereby, the transport assembly 20 can be moved from the proximal end position to the distal end position under the driving of the push driver 50 .

In this embodiment, the connecting member 30 can be connected with the clamping arm 114 . In some examples, the connecting members 30 are arranged around the outer circumference of the motion track 112 in an embracing manner. In some examples, the connecting member 30 has two L-shaped connecting arms, which are matched with the protrusions on the latching arms 114 through the through holes on the connecting arms. In other examples, the connecting arm may be snapped onto the snapping arm 114 (see FIG. 5 ) away from the side where the connecting arm is located. In this case, when the connecting piece 30 is deformed by the pressing of the button 41, the connecting arm will move in the direction of the pressure, which will cause the two connecting arms to move away from each other, thereby causing the latching arm 114 to open and causing the The flange 22 is disengaged from the snap arm 114 , so that the snap fit of the housing 10 to the transport assembly 20 can be released.

In some examples, the materials constituting the parts of the connector 30 may be selected from at least one of plastic, rubber, and metal. In some examples, the materials that make up the parts of connector 30 may be selected from plastics. In some examples, the material constituting the parts of connector 30 may be selected from at least one of ABS, POM, and nylon. In some examples, the parts making up connector 30 may be injection molded from plastic. Thereby, the rigidity of the connector 30 can be improved and the manufacturing cost can be reduced. In some examples, the materials that make up the parts of connector 30 may be selected from steel alloys. Thereby, the elasticity and strength of the connector 30 can be improved.

(push driver)

In this embodiment, the push driving member 50 may have a spring 51 whose ends are in contact with the housing 10 and the conveying assembly 20 respectively. In some examples, the push driver 50 may be a compression spring. In this case, after the snap-fit of the housing 10 to the transport assembly 20 is released, the transport assembly 20 can move from the proximal position to the distal position under the urging force of the spring 51, so that the medical device 9 can be applied to the on the skin surface.

In some examples, push drive 50 may be a pneumatic actuator. Thereby, the speed of pushing can be controlled more effectively.

FIG. 6 is a further exploded view showing the pusher according to the present embodiment. FIG. 7 is an exploded view showing the transport unit according to the present embodiment. FIG. 8 is an exploded view showing the transport assembly and the needle tip support part according to the present embodiment.

(shipping components)

As shown in FIGS. 6 and 7 , in this embodiment, the transport assembly 20 may include a transport body 21 , a flange 22 , a push joint 23 , a coupling member 24 and an engaging member 25 .

In the present embodiment, the transport body 21 is configured as the main support of the transport assembly 20 , which accommodates the tip support 60 and provides a movement track 112 for the tip support 60 . Thereby, movement of the needle tip support 60 between the proximal and distal positions can be facilitated.

In some examples, the transport body 21, the flange 22, and the engagement member 25 may be integrally formed. Thereby, the manufacturing cost can be reduced.

In some examples, the materials constituting the parts of the transport body 21 , the flange 22 and the joint 25 may be selected from at least one of plastic, rubber and metal. In some examples, the materials that make up the parts of the transport body 21 , flange 22 and joint 25 may be selected from plastics. In some examples, the materials that make up the parts of the transport body 21, flange 22, and joint 25 may be selected from at least one of ABS, POM, and nylon. In some examples, the parts that make up the transport body 21, flange 22, and joint 25 may be injection molded from plastic. Thereby, the rigidity of the transport assembly 20 can be improved and the manufacturing cost can be reduced. In the present embodiment, the push fitting 23 can be brought into contact with the spring 51 , whereby the elastic force of the spring 51 can be transmitted to the transport body 21 .

In this embodiment, the transport assembly 20 may be coupled together by the coupling 24 and the tip support 60 . Thus, the needle tip support 60 can be moved from the proximal end position to the distal end position following the transport assembly 20 .

In this embodiment, the delivery assembly 20 can be engaged with the medical device 9 by the engagement member 25 . Thereby, the medical instrument 9 can be moved from the proximal position to the distal position under the push of the transport assembly 20 .

(joint)

In this embodiment, the engaging member 25 may include an engaging surface 251 and a protrusion 252 .

In this embodiment, the engagement surface 251 is in contact with the sensor control device 92 of the medical device 9 , and the protrusion 252 is inserted into the engagement hole 922 provided in the sensor control device 92 . Thereby, the medical instrument 9 can be moved from the proximal position to the distal position under the push of the transport body 21 .

In this embodiment, the engagement member 25 releases the engagement of the delivery assembly 20 to the medical device 9 when the delivery assembly 20 is moved from the proximal position to the distal position. In this case, the medical device 9 can be disengaged from the transport assembly 20, so that the application state on the skin can be maintained.

In some examples, the engagement surface 251 and the protrusion 252 may be integrally formed. Thereby, the manufacturing cost can be reduced.

In some examples, the material of the parts constituting the joint surface 251 and the protrusion 252 may be selected from at least one of plastic, rubber and metal. In some examples, the material of the parts making up the engagement surface 251 and the protrusions 252 may be selected from plastics. In some examples, the material of the parts constituting the engagement surface 251 and the protrusion 252 may be selected from at least one of ABS, POM, and nylon. In some examples, the parts making up the engagement surface 251 and the protrusions 252 may be injection molded from plastic. Thereby, the rigidity of the joint 25 can be improved and the manufacturing cost can be reduced.

In other examples, the engagement surface 251 and the protrusion 252 may be composed of different materials, respectively. In this case, the joint surface 251 can be made of a harder material (such as plastic) to improve the rigidity of the joint surface 251, and the protrusion 252 can be made of a softer material (such as rubber), so as to improve the relationship between the protrusion 252 and the setting Engagement of the engagement hole 922 on the sensor control device 92 .

(needle tip support)

In this embodiment, the pusher 1 may further include a needle tip support 60 that supports the needle tip 80 and is configured to be movable between a proximal end position and a distal end position within the housing 10, the needle tip support portion 60 being coupled by Piece 24 is releasably coupled to transport assembly 20 . Thus, the needle tip support 60 can move with the needle tip 80 between the proximal and distal positions.

In some examples, the needle tip support 60 may engage the needle tip 80 in a pawl manner. Thereby, the needle tip 80 can be easily loaded on the needle tip support portion 60 .

FIG. 9 is a schematic diagram showing the needle tip according to the present embodiment.

(needle tip)

In the present embodiment, the needle tip 80 may be provided with a needle slot 81 having an opening, the needle tip 80 passes through a hole 921 provided on the medical device 9, and the analyte sensor 91 is placed in the needle slot 81. In this case, the needle tip 80 can penetrate the skin and subcutaneous tissue, and when withdrawn, place the analyte sensor 91 in the subcutaneous tissue, so that the analyte sensor 91 can remain in the tissue fluid and make sufficient contact.

In this embodiment, when the needle tip support 60 is moved from the proximal position to the distal position, the needle tip 80 can be inserted below the skin surface and place the analyte sensor 91 in contact with the tissue fluid and allow the sensor control device 92 is applied to the skin surface. In this case, the analyte sensor 91 can monitor the concentration of a specific component in the interstitial fluid, and transmit the monitoring data to the display instrument that is convenient for the user to read through the sensor control device 92, so that the user can monitor some of his own in real time on weekdays. Physiological indicators.

In some examples, the material of the needle tip 80 may be selected from stainless steel. Accordingly, it is possible to help the needle tip 80 to better penetrate the skin and subcutaneous tissue.

(withdrawal drive)

In the present embodiment, the pushing device 1 further includes a retraction driver 70 disposed between the transport assembly 20 and the needle tip support 60 to cause the needle tip support 60 when the transport assembly 20 reaches the distal position Move from the distal position to the proximal position. In this case, after the insertion and application actions are completed, the needle tip support 60 can be returned from the distal position to the proximal position under the drive of the retraction driver 70, so that the needle tip 80 can be pulled out of the body.

In the present embodiment, the retracting driving member 70 has a spring 71 whose ends are in contact with the transport assembly 20 and the needle tip support portion 60, respectively. In some examples, the retraction driver 70 may be a compression spring. In this case, after the insertion and application actions are completed, the needle tip support 60 can return from the distal position to the proximal position under the urging of the spring 71, so that the needle tip 80 can be pulled out of the body.

(offset piece)

In the present embodiment, the housing 10 includes a biasing member 131 that contacts the coupling member 24 to release the delivery assembly 20 from the tip support 60 when the delivery assembly 20 moves from the proximal position to the distal position. the coupling. In this case, after the insertion and application actions are completed, the needle tip support 60 can be automatically disengaged from the transport assembly 20 and returned from the distal position to the proximal position under the drive of the retraction driver 70, so that the needle tip 80 can be pulled out out of the body.

In some examples, the biasing members 131 may be two arm-like structures disposed on the base 13 . Therefore, it can help the biasing member 131 to push against the card 242 to release the engagement of the elastic buckle 241 to the needle tip support portion 60 .

(coupling)

In this embodiment, the coupling member 24 includes an elastic buckle 241 that is releasably engaged with the needle tip support portion 60 and a card 242 that is engaged with the elastic buckle 241 . In this case, the elastic buckle 241 couples the needle tip support 60 to the transport body 21 under the snap of the card 242, so that the needle tip support 60 can follow the transport body 21 to move from the proximal position to the distal position.

In this embodiment, the biasing member 131 touches the card 242 and releases the card 242 from the elastic buckle 241 to release the coupling of the transport assembly 20 to the needle tip support portion 60 . In this case, the biasing member 131 releases the coupling of the transport assembly 20 to the tip support 60, which can be returned from the distal position to the proximal position under the actuation of the retraction driver 70, thereby enabling the The needle tip 80 is pulled out of the body.

In some examples, the material constituting the parts of the elastic buckle 241 and the card 242 may be selected from at least one of plastic and metal. In some examples, the materials that make up the parts of elastic buckle 241 and card 242 may be selected from steel alloys. Thereby, the elasticity and strength of the elastic buckle 241 and the card 242 can be improved.

In this embodiment, the needle tip 80 is completely covered by the housing 10 when the needle tip support 60 is in the proximal position. In this case, under the protection of the housing 10 , the needle tip 80 can avoid contact with foreign objects to cause deformation or contamination, and the needle tip 80 can also be invisible to the user, thereby improving the safety and comfort of the pushing device 1 .

FIG. 10 is a cross-sectional view showing an initial state of the pusher according to the present embodiment.

FIG. 11 is a cross-sectional view showing the completion of the push of the push device according to the present embodiment.

12 is a cross-sectional view showing the retraction of the needle tip of the pusher according to the present embodiment.

In this embodiment, the user can press the button 41 to squeeze the connector 30 to deformation, thereby releasing the clamping of the clamping arm 114 provided on the housing 10 to the flange 22 provided on the transport assembly 20 , and the transport body 21 Moving from the proximal position to the distal position under the urging of the spring 51, the analyte sensor 91 is inserted through the needle tip 80 to a position under the skin and in contact with the tissue fluid, while the sensor control device 92 is applied to the skin surface. When the conveying body 21 moves from the proximal position to the distal position, the biasing member 131 provided on the base 13 touches the card 242 and releases the engagement between the card 242 and the elastic buckle 241 , thereby releasing the elastic buckle 241 from the needle tip support portion 60 . Constrained, the needle tip support 60 moves from the distal position to the proximal position with the needle tip 80 under the urging of the spring 71 .

Although the present invention has been specifically described above with reference to the accompanying drawings and embodiments, it should be understood that the above description does not limit the present invention in any form. Those skilled in the art can make modifications and changes to the present invention as required without departing from the essential spirit and scope of the present invention, and these modifications and changes all fall within the scope of the present invention.

Claims (10)

1. A pusher, its characterized in that: the conveying device comprises a shell, a conveying assembly and a connecting piece, wherein the shell is provided with a supporting main body which is used for accommodating the conveying assembly and providing a motion track for the conveying assembly, the supporting main body is provided with two clamping arms which are gathered together along the direction which is orthogonal to the motion track, and the conveying assembly is in releasable clamping connection with the two gathered clamping arms; the transport assembly is configured to be movable along the motion track between a proximal position and a distal position within the housing; the connecting piece with the casing cooperation, the connecting piece have along the quadrature in the orbital direction of motion is arranged respectively two links of the relative both sides of motion track and by respectively two link arms that extend towards the offside and be L shape, two link arms with two joint arms arrange transport the subassembly with one side and two link arms are connected with the joint arm that is located the offside respectively, work as the connecting piece because of the link receives the extrusion and when warping, the link arm removes so that two joint arms that gather together move dorsad along the direction of pressure.

2. The pushing device as claimed in claim 1, further comprising a touch member disposed at an outer side of the housing, the touch member including a button linked with the connection end of the connection member, the carrying assembly being released from the housing by pressing the button of the touch member.

3. The pusher device of claim 1, wherein the medical device comprises an analyte sensor in contact with subcutaneous interstitial fluid and a sensor control device located at a skin surface.

4. The pusher of claim 3, wherein the carrier assembly further comprises an engaging member for engaging the medical instrument, the engaging member comprising an engaging surface for contacting the sensor control device and a protrusion for inserting into an engaging hole provided on the sensor control device.

5. The pusher device of claim 4, wherein the engagement member releasably engages the medical instrument, the engagement member releasing engagement with the medical instrument when the transport assembly is moved from the proximal position to the distal position.

6. The pusher apparatus of claim 1, wherein the carrier assembly includes a flange releasably engageable with the engagement arm, the connector moving the engagement arm laterally apart when the connector is subjected to pressure from both sides to disengage the flange from the support of the engagement arm.

7. The pusher of claim 6, wherein the material of the flange is selected from at least one of ABS, POM, and nylon.

8. The pushing device as claimed in claim 1, wherein the connecting arm is connected to the engaging arm by a through hole of the connecting arm engaging with a protrusion of the engaging arm.

9. The pusher device of claim 1, further comprising a pusher drive having a spring with two ends contacting the housing and the carrier assembly, respectively, the spring configured to push the carrier assembly from the proximal position to the distal position after the carrier assembly is released.

10. The push device of claim 9, wherein the housing includes an upper cover coupled to one end of the motion track and coupled to the spring, and a base in communication with the other end of the motion track and configured to receive the medical instrument.

Images