WO2019080823A2 - 一种穿刺深度后置调节的采血笔 - Google Patents

一种穿刺深度后置调节的采血笔

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Publication number
WO2019080823A2
WO2019080823A2 PCT/CN2018/111339 CN2018111339W WO2019080823A2 WO 2019080823 A2 WO2019080823 A2 WO 2019080823A2 CN 2018111339 W CN2018111339 W CN 2018111339W WO 2019080823 A2 WO2019080823 A2 WO 2019080823A2
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WO
WIPO (PCT)
Prior art keywords
blood collection
depth adjustment
cap
sleeve
collection pen
Prior art date
Application number
PCT/CN2018/111339
Other languages
English (en)
French (fr)
Other versions
WO2019080823A3 (zh
Inventor
施国平
霍斯特曼·安东尼·斯科特
Original Assignee
苏州施莱医疗器械有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 苏州施莱医疗器械有限公司 filed Critical 苏州施莱医疗器械有限公司
Priority to US16/758,531 priority Critical patent/US11766201B2/en
Publication of WO2019080823A2 publication Critical patent/WO2019080823A2/zh
Publication of WO2019080823A3 publication Critical patent/WO2019080823A3/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150015—Source of blood
    • A61B5/150022—Source of blood for capillary blood or interstitial fluid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15101—Details
    • A61B5/15103—Piercing procedure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150175—Adjustment of penetration depth
    • A61B5/150183—Depth adjustment mechanism using end caps mounted at the distal end of the sampling device, i.e. the end-caps are adjustably positioned relative to the piercing device housing for example by rotating or screwing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150175—Adjustment of penetration depth
    • A61B5/150198—Depth adjustment mechanism at the proximal end of the carrier of the piercing element
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15101—Details
    • A61B5/15103—Piercing procedure
    • A61B5/15107—Piercing being assisted by a triggering mechanism
    • A61B5/15111—Semi-automatically triggered, e.g. at the end of the cocking procedure, for instance by biasing the main drive spring or when reaching sufficient contact pressure, the piercing device is automatically triggered without any deliberate action by the user
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15101—Details
    • A61B5/15103—Piercing procedure
    • A61B5/15107—Piercing being assisted by a triggering mechanism
    • A61B5/15113—Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15101—Details
    • A61B5/15115—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids
    • A61B5/15117—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15101—Details
    • A61B5/15126—Means for controlling the lancing movement, e.g. 2D- or 3D-shaped elements, tooth-shaped elements or sliding guides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15186—Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use
    • A61B5/15188—Constructional features of reusable driving devices
    • A61B5/1519—Constructional features of reusable driving devices comprising driving means, e.g. a spring, for propelling the piercing unit
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15186—Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use
    • A61B5/15188—Constructional features of reusable driving devices
    • A61B5/15192—Constructional features of reusable driving devices comprising driving means, e.g. a spring, for retracting the lancet unit into the driving device housing
    • A61B5/15194—Constructional features of reusable driving devices comprising driving means, e.g. a spring, for retracting the lancet unit into the driving device housing fully automatically retracted, i.e. the retraction does not require a deliberate action by the user, e.g. by terminating the contact with the patient's skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150381—Design of piercing elements
    • A61B5/150412—Pointed piercing elements, e.g. needles, lancets for piercing the skin

Definitions

  • the invention relates to a medical blood collection device, in particular to a blood collection pen used in combination with a disposable blood collection needle.
  • the puncture depth of the blood collection pen has the characteristics of post adjustment.
  • the blood collection pen is a blood collection device used in conjunction with a disposable blood collection needle, wherein the blood collection pen can be reused, and the blood collection needle is only used for one-time use in order to avoid cross infection.
  • the development of the blood collection pen has been for decades, and the improvement of the blood collection pen has also gone through many stages. At present, the blood collection pen is gradually maturing, but in the development process of the blood collection pen, in order to adapt to different ages (such as adults and children) And blood collection objects such as different cortical thicknesses, in the structure of the blood collection pen, a puncture depth adjustment mechanism is specially designed to meet the needs of different blood collection objects.
  • the Chinese patent CN202891945U announced that it had granted a utility model patent with the patent number 2012204829392 and the name "painless blood collection pen”.
  • the patent is designed with a puncture depth adjustment mechanism, and the adjustment member is an adjustment cap that is disposed at the front of the blood collection pen.
  • U.S. Patent No. 5,613,978 issued a patent entitled “Adjustable tip for lancet device” (the adjustment cap for a blood collection device) on March 25, 1997.
  • the patent also has a puncture depth adjustment mechanism, and the adjustment member is an adjustment cap that is disposed at the front of the blood collection pen.
  • the above two patent cases all give a technical solution that the puncture depth can be adjusted, since the adjusting parts (adjustment caps) are all arranged on the front cap of the blood collection pen, it is necessary to disassemble and adjust the blood collection needle when the actual use process is installed. Cap, so easy to misuse to change the adjusted penetration depth. Especially for personal use of diabetic patients, the depth of penetration is generally not changed after the determination of the depth of puncture, and it is easy to misuse and change the depth of puncture in later use (when the lancet is installed) is a situation that the individual user does not want to see.
  • the invention provides a blood collection pen with post-puncture depth adjustment, the purpose of which is to solve the problem that the prior art blood collection pen installation blood collection needle interferes with the puncture depth indicated in the above background art.
  • a blood collection pen with a post-puncture depth adjustment including a cap, a cap, a rod and a casing, wherein:
  • the cap is a sleeve-type cap of the head of the blood collection pen, and the front end of the cap is provided with a blood collection end surface for contacting the blood collection site of the human body.
  • the cap is a seat body for connecting and engaging with the cap of the front portion of the blood collection pen, and the cap and the cap are cooperatively connected through the connection port.
  • the shooting rod is an emitting part capable of installing a blood collecting needle, and the shooting rod or the blood collecting needle is provided with an active impact surface.
  • the outer casing is a casing of a blood collection pen, the outer casing and the cap are fixedly connected, or the outer casing and the cap are integrally formed.
  • the innovation lies in: the blood collecting pen is provided with a depth adjusting jacket and a depth adjusting middle sleeve, and the main body of the depth adjusting jacket and the depth adjusting middle sleeve are sleeve structures, the shooting rod is located in the depth adjusting middle sleeve, and the depth adjusting jacket is The suit is placed outside the depth adjustment.
  • the depth adjustment jacket is rotationally connected with respect to the outer casing in the circumferential direction of the blood collection pen, and is positioned in the axial direction of the blood collection pen; the depth adjustment jacket is provided with a manual adjustment ring, and the manual adjustment ring is a rear portion of the depth adjustment jacket.
  • a sleeve in the assembled state, the manual adjustment ring is exposed on the outer side or the rear side of the middle portion of the blood collection pen for the user to manually rotate the adjustment;
  • the depth adjustment jacket and the cap or the outer casing are provided with a rotational positioning
  • the slot is provided with a rotating positioning block, and the rotating positioning slot is a plurality of slots distributed in the circumferential direction of the blood collecting pen.
  • the rotating positioning block is a block body corresponding to the rotating positioning slot, and the rotating positioning slot and the rotating positioning block
  • the rotation positioning mechanism that constitutes the depth adjustment outer casing relative to the outer casing in the circumferential direction of the blood collection pen.
  • the depth adjustment middle sleeve is positioned and connected with respect to the outer casing in the circumferential direction of the blood collection pen, and is in a sliding connection in the axial direction of the blood collection pen; the depth adjustment is provided with a passive impact surface corresponding to the active impact surface; depth adjustment One of the middle sleeve and the depth adjustment jacket is provided with a spiral groove, and the other is provided with a driving block.
  • the driving block is a block body corresponding to the spiral groove, and the spiral groove and the driving block cooperate to form a depth adjustment middle sleeve.
  • the manual adjustment ring on the rotation depth adjustment casing drives the depth adjustment middle sleeve to move axially relative to the outer casing in the blood collection pen, thereby changing the axial distance between the blood collection end face and the passive impact surface in the blood collection pen. Adjust the tip penetration depth.
  • front in the “front end” and “front” refers to the direction indicated by the tip of the blood collection pen or the shooting direction of the blood collection needle.
  • rear in the “post” and “rear” refers to the direction indicated by the tail of the blood collection pen or the opposite direction of the shooting direction of the blood collection needle.
  • the "axial direction” refers to the axial direction of the blood collection pen, and is also the ray direction of the line connecting the tip of the blood collection pen to the end of the pen, or the front-rear direction.
  • the “circumferential direction” refers to the circumferential direction of the blood collection pen.
  • the inner wall of the depth adjustment middle sleeve is provided with an inner bump
  • the passive impact surface is an end surface of the inner bump on the side of the active impact surface.
  • the active impact surface is disposed on a moving path of the side of the shooting rod or the blood collection needle (5) corresponding to the passive impact surface.
  • the depth adjustment sleeve is a tubular member, and at least two pairs of dividing grooves are laterally opened along the tubular body on the outer edge of the tubular member, and each pair of dividing grooves is formed by two slots in the tube.
  • the body is axially spaced apart, and all of the dividing grooves are circumferentially spaced apart along the outer edge of the depth adjusting middle sleeve, wherein the groove body has a circumferential opening of the outer edge of the sleeve less than 180 degrees in the depth adjustment, and the groove body is in the tube diameter
  • the pipe wall of the middle sleeve is separated into the elastic wall by the inner wall of each of the pair of dividing grooves, and the two ends of the elastic bridge are integrated with the depth adjusting middle sleeve, and the relative depth of the bridge of the elastic bridge is adjusted.
  • the passive impact surface is disposed on the bridge arch or the bridge arch extension body, and is a side of the bridge arch or the bridge arch extension body on the side of the active impact surface, thereby forming an elastic bridge buffer structure.
  • the bridge arch extension has the following two forms:
  • the first type is that the bridge arch extension is an inner bump extending inwardly of the inner side of the bridge arch, and the passive impact surface is a side of the inner bump on one side of the active impact surface, and the active impact surface is inside the sleeve of the depth adjustment Passive impact surface collision fit.
  • the second type is that the bridge arch extension is an outer protrusion extending outwardly of the bridge arch, and the passive impact surface is a side of the outer bump on the side of the active impact surface, and the active impact surface is outside the sleeve of the depth adjustment Passive impact surface collision fit.
  • the design principle and technical idea of the present invention are: in order to solve the problem that the existing blood collection pen is installed with the blood collection needle to interfere with the puncture depth, the present invention separates the puncture depth adjustment mechanism from the head of the blood collection pen and transfers to the middle or the back of the blood collection pen. At this time, in order not to affect the basic structure and layout of the original design of the blood collection pen, and considering the rationality, simplicity and process manufacturability of the structural design, a depth adjustment jacket and a depth adjustment middle sleeve are specially designed on the blood collection pen.
  • the shooting rod is disposed in the depth adjustment middle sleeve, and the depth adjustment jacket is set outside the depth adjustment middle sleeve, wherein the depth adjustment outer sleeve is rotated in the circumferential direction of the blood collection pen relative to the outer casing, and is positioned in the axial direction of the blood collection pen
  • the connection and depth adjustment jacket are provided with a manual adjustment ring.
  • the manual adjustment ring is exposed on the outer side or the rear side of the middle portion of the blood collection pen, so that the user can manually adjust the rotation, and the depth adjustment jacket is provided between the outer cover and the cap or the outer casing.
  • the rotary positioning mechanism the depth adjustment middle sleeve is positioned and connected with respect to the outer casing in the circumferential direction of the blood collection pen, and is simultaneously connected in the axial direction of the blood collection pen, and the spiral groove and the driving block are arranged between the depth adjustment middle sleeve and the depth adjustment jacket.
  • the active impact surface of the corresponding shot rod or the blood collection needle is set in the depth adjustment to have a passive impact surface.
  • the present invention has the following advantages and effects compared with the prior art:
  • the invention can effectively separate the puncture depth adjustment mechanism from the head of the blood collection pen and transfer it to the middle and rear part of the blood collection pen, completely solving the problem that the installation of the blood collection needle interferes with the puncture depth.
  • the invention solves the problem of the rear position of the puncture depth adjusting mechanism reasonably and effectively by the two sleeve structures such as the depth adjusting casing and the depth adjusting middle sleeve on the premise of retaining the original basic structure and design layout of the blood drawing pen.
  • the invention arranges the necessary rotating mechanism, moving mechanism and rotating positioning mechanism in the puncture depth adjusting mechanism reasonably in the two sleeve structure, and has reasonable design, ingenious design, outstanding substantive features and remarkable progress.
  • the invention has strong adaptability, and can be applied not only to the structure in which the cap and the cap form a plug connection through the plug port, but also to the structure in which the cap and the cap are threaded through the threaded port, and the cap and the cap first.
  • the form of the connection is formed by a plug fit and then by a rotary latch.
  • the invention has good process manufacturability, reliable work and convenient use, further improves the performance of the blood collection pen, and plays a positive role in the improvement and development of the blood collection pen.
  • Figure 1 is a perspective view of an embodiment of a blood collection pen of the present invention
  • Figure 2 is a perspective exploded view of an embodiment of the blood collection pen of the present invention.
  • Figure 3 is a perspective view of a cap of an embodiment of a blood collection pen according to the present invention.
  • Figure 4 is a perspective view of the needle removing rod of the embodiment of the blood collecting pen of the present invention.
  • Figure 5 is a perspective view showing the outer casing of the embodiment of the blood collection pen of the present invention.
  • Figure 6 is a perspective view of the depth adjustment middle sleeve of the embodiment of the blood collection pen of the present invention.
  • Figure 7 is a cross-sectional view showing the elastic bridge structure of the embodiment of the blood collection pen of the present invention.
  • Figure 8 is a cross-sectional view showing another elastic bridge structure of the embodiment of the blood collection pen of the present invention.
  • Figure 9 is a perspective view of a shooting rod of an embodiment of the blood collection pen of the present invention.
  • Figure 10 is a perspective view showing the assembled state of the shooting rod, the blood collecting needle and the shooting rod locking bolt of the embodiment of the blood collecting pen of the present invention
  • Figure 11 is a perspective view showing the assembly state of the shooting rod, the blood collection needle, the shooting rod locking bolt and the button of the embodiment of the blood collection pen of the present invention
  • Figure 12 is a perspective view showing the assembled state of the needle removing lever and the tail puller of the embodiment of the blood collecting pen of the present invention.
  • Figure 13 is a perspective view of a depth adjustment outer casing of the embodiment of the blood collection pen of the present invention.
  • Figure 14 is a view showing the initial assembly state of the embodiment of the blood collection pen of the present invention.
  • Figure 15 is a state diagram of the cap of the blood collection pen of the present invention.
  • Figure 16 is a view showing a state in which a blood collection pen according to an embodiment of the present invention is loaded into a blood collection needle;
  • Figure 17 is a view showing a state in which the blood collection needle of the present invention is directly pressed against the blood collection needle after being loaded into the blood collection needle;
  • Figure 18 is a view showing a state in which the embodiment of the blood collection pen of the present invention is loaded into a blood collection needle by using a tail pull handle;
  • Figure 19 is a retracted state diagram of the tail handle of the embodiment of the blood collection pen of the present invention under the action of a rod return spring;
  • Figure 20 is a diagram showing the state of pressing the button after rotating the manual adjustment ring to the appropriate gear position according to the embodiment of the blood collection pen of the present invention
  • Figure 21 is a diagram showing the state of emission of the shooting rod of the embodiment of the blood collection pen according to the embodiment of the present invention.
  • Figure 22 is an enlarged view of a portion A of Figure 20;
  • Figure 23 is an enlarged view of B of Figure 21;
  • Figure 24 is a diagram showing the state of the rod resetting of the embodiment of the blood collection pen of the present invention.
  • Figure 25 is a view showing a state in which the cap of the blood collection pen is removed according to the embodiment of the blood collection pen of the present invention.
  • Figure 26 is a diagram showing the initial state of recovery of the embodiment of the blood collection pen of the present invention.
  • Example a blood collection pen with post-puncture depth adjustment
  • the blood collection pen comprises a cap 1, a cap 2, a shooter 6, a safety bolt 24, a casing 17, a plunger locking bolt 26, a button 23, a pen holder 25, a shooter return spring 28,
  • the tail pull needle return spring 29, the launch spring 30, the needle release lever 27, the depth adjustment middle sleeve 9, the depth adjustment outer sleeve 8 and the tail pull handle 22 are formed (see Fig. 2).
  • the cap 1 is a sleeve-type cap of the head of the blood collection pen, and the front end of the cap 1 is provided with a blood collection end face 3 for contacting the blood collection site of the human body.
  • the cap 2 is a seat body for connecting and engaging with the cap 1 at the front portion of the blood collection pen, and the cap 1 and the cap 2 are cooperatively connected through the connection port 4.
  • the connection port 4 is a plug port (see FIG. 3), and the cap 1 and the cap 2 form a plug connection through the plug port.
  • the shooting rod 6 is an emitting member capable of mounting the blood collecting needle 5, and the shooting rod 6 is provided with an active impact surface 7.
  • the head of the shooting rod 6 is provided with a needle holder 31 for mounting the blood collection needle 5, and the active impact surface 7 is disposed on the tail side of the shooting rod 6 (see Fig. 9).
  • the shot stop latch 26 is mounted on the shooter 6 (see Figure 10).
  • the shooter 6 to which the shooter lock bolt 26 is assembled is used to cooperate with the button 23 to constitute a locking and unlocking structure of the shooter 6 (see Fig. 11).
  • the shooter 6 and the shooter lock pin 26 are of a separate structure, but the present invention is not limited thereto, and both may be designed as a unitary structure (not shown).
  • the outer casing 17 is a casing of a blood collection pen (see FIG.
  • the safety pin 24 is fitted in a chute on the cap 2 to prevent mishandling of the needle during use. Since this structure is independent of the puncture depth post adjustment of the present invention, it will not be described in detail herein.
  • the tail puller 22 is used for the upper jaw after the blood collection needle 5 is installed, and is used for unloading after use. The tail puller 22 is fixedly coupled to the needle release lever 27 (see Fig. 12).
  • the innovation of the present invention is to design a double-sleeve puncture depth post-adjusting structure for the blood collection pen.
  • the details are as follows:
  • a depth adjustment outer sleeve 8 (see FIG. 13) and a depth adjustment middle sleeve 9 (see FIG. 6) are disposed on the blood collection pen, and the main body of the depth adjustment outer sleeve 8 and the depth adjustment middle sleeve 9 are sleeve structures, and the shooting rod 6 is located In the depth adjustment middle sleeve 9, the depth adjustment jacket 8 is set outside the depth adjustment sleeve 9.
  • the depth adjustment outer casing 8 is rotationally coupled with respect to the outer casing 17 in the circumferential direction of the blood collection pen while being positioned in the axial direction of the blood collection pen.
  • an annular groove (see FIG. 13) is provided on the outer edge of the depth adjustment casing 8, and a rib is provided on the inner edge of the outer casing 17, and the rib is engaged with the annular groove. It is also possible to exchange the two, that is, to provide a rib on the outer edge of the depth adjustment casing 8, and to provide an annular groove on the inner edge of the outer casing 17.
  • the depth adjustment casing 8 is provided with a manual adjustment ring 10, which is a sleeve of the rear portion of the depth adjustment casing 8 (see FIG. 13).
  • the depth adjustment casing 8 is provided with a rotary positioning groove 11 (see FIG. 13), and the cap base 2 is provided with a rotary positioning block 12 (see FIG. 3).
  • the rotary positioning groove 11 is a plurality of grooves spaced apart in the circumferential direction of the blood collection pen.
  • the body, the rotary positioning block 12 is a block body corresponding to the rotary positioning groove 11, and the rotary positioning groove 11 and the rotary positioning block 12 cooperate to form a rotational positioning mechanism of the depth adjustment outer casing 8 with respect to the outer casing 17 in the circumferential direction of the blood collection pen.
  • the rotary positioning block 12 is provided on the depth adjustment outer casing 8
  • the rotary positioning groove 11 is provided on the cap base 2. Since the cap 2 and the outer casing 17 are in a fixed connection relationship in the assembled state, the rotary positioning groove 11 or the rotary positioning block 12 can also be provided on the cap 2 instead of being disposed on the outer casing 17 (as long as the structure permits) .
  • the depth adjustment middle sleeve 9 is positioned in a circumferential direction with respect to the outer casing 17 in the circumferential direction of the blood collection pen, and is slidably connected in the axial direction of the blood collection pen.
  • a limiting slot 18 (see FIG. 6) is disposed on the sleeve 9 in the depth adjustment, and a limiting block is disposed on the cap 2, and the limiting slot 18 is arranged along the axial direction of the blood collecting pen.
  • the limiting slot 18 cooperates with the limiting block.
  • the limiting slot 18 and the limiting block is arranged on the sleeve 9 in the depth adjustment, and the limiting slot 18 is arranged on the cap 2 . Since the cap 2 and the outer casing 17 are in a fixed connection relationship in the assembled state, the limiting groove 18 or the limiting block can also be provided on the cap 2 instead of being disposed on the outer casing 17.
  • the active adjustment surface 7 corresponding to the active adjustment surface 7 of the depth adjustment sleeve 9 is provided with a passive impact surface 13 (see Fig. 7).
  • the depth adjustment middle sleeve 9 is provided with a spiral groove 14 (see FIG.
  • the depth adjustment outer casing 8 is provided with a driving block 15 (see FIG. 13).
  • the driving block 15 is a block body corresponding to the spiral groove 14, and a spiral groove
  • the engagement with the drive block 15 constitutes a movement mechanism of the depth adjustment intermediate sleeve 9 relative to the outer casing 17 in the axial direction of the blood collection pen. It is also possible to exchange the arrangement positions of both the spiral groove 14 and the driving block 15, that is, the driving block 15 is provided on the sleeve 9 in the depth adjustment, and the spiral groove 14 is provided in the depth adjusting casing 8.
  • the depth adjustment middle sleeve 9 is a tubular member, and the main structure of the tubular member is a circular tube (see Fig. 6). At least two pairs of dividing grooves 19 (see FIG. 6) are laterally opened on the outer edge of the tubular member, and each pair of dividing grooves 19 is formed by two grooves in the axial direction of the pipe body, and all pairs are divided.
  • the slots 19 are circumferentially spaced apart along the outer edge of the depth adjusting sleeve 9 in the circumferential direction of the outer periphery of the sleeve 9 in the depth adjustment, and the slot body is radially penetrated through the depth adjusting sleeve 9 in the tube body.
  • each pair of dividing grooves 19 isolates the pipe wall located at the middle portion into an elastic bridge 20, and the two ends of the elastic bridge 20 are integrally connected with the depth adjusting middle sleeve 9, and the bridge arch of the elastic bridge 20 is independent of the depth adjustment sleeve 9
  • the passive impact surface 13 is disposed on the bridge arch or the bridge arch extension body, and is a side surface of the bridge arch or the bridge arch extension body on the side of the active impact surface 7 to constitute an elastic bridge buffer structure.
  • the bridge arch body is an inner bump 16 (see FIG.
  • the passive impact surface 13 is a side of the inner bump 16 on the side of the active impact surface 7
  • the active impact surface 7 collides with the passive impact surface 13 inside the depth adjustment sleeve 9 .
  • Figure 14 is a view showing the initial assembled state of the embodiment of the blood collection pen of the present invention. The relative position and relationship between the components in the initial assembled state can be seen in Figure 14.
  • Figure 15 is a view showing the state of the cap of the blood collection pen of the present invention. In the state in which the cap is removed, the cap 1 is removed, and the relative positions and relationships between the other components are the same as those in Fig. 14.
  • Figure 16 is a view showing a state in which the embodiment of the blood collection pen of the present invention is loaded into a blood collection needle.
  • the lancet 5 is inserted into the hub 31 of the plunger 6 in the state in which the lancet is loaded.
  • Figure 17 is a view showing a state in which the blood collection needle of the present invention is directly pressed against the blood collection needle after being loaded into the blood collection needle. In this state, as long as the lancet 5 is directly pressed in the direction indicated by the arrow in Fig. 17, the shooter 6 is simultaneously compressing the launch spring 30, and the shooter 6 is locked on the button 23 by the shooter lock pin 26, and finally the cap 1 is closed. .
  • Figure 18 is a view showing the state in which the embodiment of the blood collection pen of the present invention is loaded into the blood collection needle using the tail pull handle. In this state, if the upper lancet 5 is not directly pressed, the cap 1 can be first pulled and then the tail pull 22 can be pulled backward. The shoot 6 is simultaneously compressed by the shooter 6 and the shooter 6 is locked by the shooter. The peg 26 is locked to the button 23.
  • Figure 19 is a view showing a state in which the tail handle of the blood collection pen embodiment of the present invention is retracted under the action of the rod return spring 28. At this point, the tail pulls the hand to finish.
  • Puncture depth adjustment can be performed in this state, or it can be adjusted in advance. In general, it should be adjusted before formal blood collection.
  • the puncture depth is adjusted by rotating the manual adjustment ring 10 on the depth adjustment casing 8.
  • the depth adjustment casing 8 drives the depth adjustment middle sleeve 9 in the axial direction of the blood collection pen relative to the outer casing 17 by the cooperation of the driving block 15 and the spiral groove 14. Thereby, the distance between the blood collection end face 3 and the passive impact face 13 in the axial direction of the blood collection pen is changed, thereby adjusting the penetration depth of the needle tip.
  • Figure 20 is a view showing a state in which the button 23 is pressed after the manual adjustment ring 10 is rotated to the appropriate position by the embodiment of the blood collection pen of the present invention.
  • Figure 22 is an enlarged view of a portion A of Figure 20. In this state, the button 23 forces the shooter 6 and the shooter lock pin 26 to be unhooked.
  • Figure 21 is a view showing a state in which the shooting rod 6 of the blood collection pen embodiment of the present invention is pushed by the firing spring 30.
  • Figure 23 is an enlarged view of a portion B of Figure 21 . In this state, the launch spring 30 pushes the shooter 6 and the blood collection needle 5 to emit a puncture.
  • Figure 24 is a view showing a state in which the shooting rod 6 of the blood collection pen embodiment of the present invention is reset. In this state, under the action of the shooter return spring 28 and the launching spring 30, the shooter 6 returns to the normal position in the axial direction of the blood collection pen.
  • Figure 25 is a view showing a state in which the cap 1 of the present invention is removed from the cap of the blood collection pen and the puncture handle 22 is removed.
  • the tail puller 22 is pushed forward in the direction indicated by the arrow in the figure to force the blood collection needle 5 to be removed from the needle holder 31 of the shooter 6, and the tail pull return spring 29 is compressed.
  • Figure 26 is a view showing the initial state of recovery of the embodiment of the blood collection pen of the present invention. In this state, under the action of the tail pull-up return spring 29, the tail puller 22 is reset, and then the cap 1 is closed, that is, the initial assembled state is restored.
  • the passive impact surface 13 is disposed on the inner bump 16 (see Fig. 7) extending inwardly of the inner side of the bridge of the elastic bridge 20 of the depth adjusting sleeve 9.
  • the present invention is not limited thereto, and the passive impact surface 13 may be disposed on the outer protrusion 22 (see FIG. 8) extending outwardly of the bridge of the elastic bridge 20, and the passive impact surface 13 is an external bump 22 that is actively struck.
  • the active impact surface 7 collides with the passive impact surface 13 outside the depth adjustment sleeve 9 .
  • the passive impact surface 13 is provided on the elastic bridge 20 of the depth adjustment middle sleeve 9, thereby constituting the elastic bridge buffer structure.
  • the present invention is not limited thereto, and an elastic bridge buffer structure may not be used, that is, an inner bump 16 is provided on the inner wall of the sleeve 9 in the depth adjustment, and the passive impact surface 13 is an end surface of the inner bump 16 on the side of the active impact surface 7 .
  • the active impact surface 7 is provided on the moving path of the side of the shooting rod 6 or the lancet 5 corresponding to the passive impact surface 13.
  • the active impact surface 7 is provided on the side of the tail of the shooter 6.
  • the present invention is not limited thereto, and the active impact surface 7 can be designed on the blood collection needle 5.
  • the depth adjusting middle sleeve 9 is a tubular member, and the main structure of the tubular member is a circular tube (see Fig. 6).
  • the present invention is not limited thereto, and the shape of the cross-section adjusting sleeve 9 may be rectangular, triangular, polygonal, and irregular, etc., such as a square tube, a rectangular tube, a triangular tube, and a polygonal tube.
  • connection port 4 is a plug port (see Fig. 3).
  • the present invention is not limited thereto, and the connection port 4 may be a threaded port through which the cap 1 and the cap 2 are screwed.
  • the connection port 4 can also be a plug-in swivel port, and the cap 1 and the cap 2 form a plug-in swivel connection through the plug-in swivel port.

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Abstract

一种穿刺深度后置调节的采血笔，包括笔帽、帽座、射杆以及外壳，其特征在于：采血笔上设有深度调节外套和深度调节中套，射杆位于中套内，外套套装于中套外；外套相对于外壳在周向转动连接，同时在轴向定位连接，外套与外壳之间设有旋转定位机构；中套相对于外壳在周向定位连接，同时在轴向滑动连接，中套与外套之间设有旋转移动机构，中套上对应射杆的主动撞击面设有被动撞击面；外套上设有外露在采血笔中后部外侧的手动调节圈，转动手动调节圈带动中套轴向移动，从而改变针尖穿刺深度。本发明将穿刺深度调节机构从采血笔头部分离出来，并转移到采血笔的中后部，彻底解决了安装采血针干扰穿刺深度的问题。

Description

一种穿刺深度后置调节的采血笔 技术领域
本发明涉及医用采血器械，特别涉及一种与一次性采血针配套使用的采血笔。该采血笔穿刺深度具有后置调节的特点。
背景技术
采血笔是一种与一次性采血针配套使用的采血装置，其中采血笔可重复使用，而采血针为了避免交叉传染仅为一次性使用。采血笔的发展已有数十年历史，其中对采血笔的改进也经历了许多阶段，目前采血笔正逐步走向成熟，但在采血笔的发展历程中，为了适应不同年龄(比如成人和儿童)和不同皮质厚度等采血对象，在采血笔结构中专门设计有穿刺深度调节机构，以满足不同采血对象的需要。
中国专利CN202891945U于2013年4月24日公告授权了一件专利号为2012204829392，名称为《无痛采血笔》的实用新型专利。该专利中设计有穿刺深度调节机构，调节部件为调节帽，该调节帽设在采血笔的前部。
美国专利US5613978于1997年3月25日公告授权了一件名称《Adjustable tip for lancet device》(采血装置的调节帽)的发明专利。该专利中也设计有穿刺深度调节机构，调节部件为调节帽，该调节帽设在采血笔的前部。
以上两个专利案尽管都给出了穿刺深度可以调节的技术方案，但由于调节部件(调节帽)均设在采血笔的前部盖帽上，在实际使用过程中安装采血针时需要拆装调节帽，这样容易误操作改变已调节好的穿刺深度。特别是针对糖尿病患者个人使用时，穿刺深度确定后一般不会改变，而在以后使用中(安装采血针时)容易误操作改变穿刺深度是个人使用者不希望看到的情况。
为此，如何解决上述问题，设计一种排除干扰的更好的穿刺深度调节机构是本发明研究的课题。
发明内容
本发明提供一种穿刺深度后置调节的采血笔，其目的是要解决上述背景技术中指出的现有采血笔安装采血针干扰穿刺深度的问题。
为达到上述目的，本发明采用的技术方案是：一种穿刺深度后置调节的采血笔，包括笔帽、帽座、射杆以及外壳，其中：
所述笔帽为采血笔头部的套筒式盖帽，笔帽前端设有用来接触人体采血部位的采血端面。
所述帽座为采血笔前部用来与笔帽连接配合的座体，笔帽与帽座通过连接端口配合连接。
所述射杆为一个能够安装采血针的发射部件，射杆或采血针上设有主动撞击面。
所述外壳为采血笔的壳体，外壳与帽座为固定连接，或者外壳与帽座为一体成型结构。
其创新在于：所述采血笔上设有一个深度调节外套和一个深度调节中套，深度调节外套和深度调节中套的主体均为套筒结构，射杆位于深度调节中套内，深度调节外套套装于深度调节中套外。
所述深度调节外套相对于外壳在采血笔的周向上为转动连接，同时在采血笔的轴向上为定位连接；深度调节外套上设有手动调节圈，手动调节圈为深度调节外套中后部的一段套筒，在装配状态下手动调节圈外露在采血笔的中部外侧或后部外侧，以便使用者手动旋转调节；深度调节外套与帽座或外壳两者中，一者上设有旋转定位槽，另一者上设有旋转定位块，旋转定位槽为间隔分布在采血笔周向上的若干个槽体，旋转定位块为对应旋转定位槽配置的块状体，旋转定位槽与旋转定位块配合构成深度调节外套相对于外壳在采血笔的周向上的旋转定位机构。
所述深度调节中套相对于外壳在采血笔的周向上为定位连接，同时在采血笔的轴向上为滑动连接；深度调节中套上对应所述主动撞击面设有被动撞击面；深度调节中套与深度调节外套两者中，一者上设有螺旋槽，另一者上设有驱动块，驱动块为对应螺旋槽配置的块状体，螺旋槽与驱动块配合构成深度调节中套相对于外壳在采血笔的轴向上的移动机构。
在装配状态下，转动深度调节外套上的手动调节圈，带动深度调节中套相对于外壳在采血笔轴向移动，从而改变采血端面与被动撞击面之间在采血笔轴向的距离，以此调节针尖穿刺深度。
上述技术方案中的有关内容解释如下：
1.上述方案中，所述“前端”和“前部”中“前”的含义是指采血笔的笔尖所指方向或采血针的射击方向。所述“后置”和“后部”中“后”的含义是指采血笔的笔尾所指方向或采血针射击方向的反方向。
2.上述方案中，所述“轴向”是指采血笔的轴线方向，也是采血笔的笔尖与笔尾之间连线的射线方向，或者为前后方向。所述“周向”是指采血笔的圆周方向。
3.上述方案中，所述深度调节中套的内壁上设有内凸块，被动撞击面为内凸块靠主动撞击面一侧的端面。所述主动撞击面设在射杆或采血针(5)侧部对应被动撞击面的运动路径上。
4.上述方案中，所述深度调节中套为一管形构件，在该管形构件的外缘上沿管体横向开设有至少两对分割槽，每对分割槽由两个槽体在管体轴向相隔布置而成，所有对分割槽沿深度调节中套外缘周向相隔布置，所述槽体在深度调节中套外缘周向的开口小于180度， 而且槽体在管体径向贯穿深度调节中套的管壁，每对分割槽将位于中间部分的管壁隔离成弹性桥，弹性桥的两端与深度调节中套连成一体，弹性桥的桥拱相对深度调节中套独立，所述被动撞击面设在桥拱或者桥拱延伸体上，而且是桥拱或者桥拱延伸体靠主动撞击面一侧的侧面，以此构成弹性桥缓冲结构。在此弹性桥缓冲结构中，桥拱延伸体有以下两种形式：
第一种是桥拱延伸体为桥拱内侧向内延伸的内凸块，所述被动撞击面为内凸块靠主动撞击面一侧的侧面，所述主动撞击面在深度调节中套内侧与被动撞击面碰撞配合。
第二种是桥拱延伸体为桥拱外侧向外延伸的外凸块，所述被动撞击面为外凸块靠主动撞击面一侧的侧面，所述主动撞击面在深度调节中套外侧与被动撞击面碰撞配合。
本发明设计原理和技术构思是：为了解决现有采血笔安装采血针干扰穿刺深度的问题，本发明将穿刺深度调节机构从采血笔头部分离出来，转移到采血笔的中部或后部。此时，为了不影响采血笔原有设计的基本结构和布局，同时考虑到结构设计的合理性、简洁性以及工艺制造性，在采血笔上专门设计了一个深度调节外套和一个深度调节中套，射杆安置在深度调节中套内，深度调节外套套装于深度调节中套外，其中，深度调节外套相对于外壳在采血笔的周向上为转动连接，同时在采血笔的轴向上为定位连接，深度调节外套上设有手动调节圈，在装配状态下手动调节圈外露在采血笔的中部外侧或后部外侧，以便使用者手动旋转调节，深度调节外套与帽座或外壳之间设有旋转定位机构；深度调节中套相对于外壳在采血笔的周向上为定位连接，同时在采血笔的轴向上为滑动连接，深度调节中套与深度调节外套之间设有螺旋槽与驱动块配合的移动机构，深度调节中套上对应射杆或采血针的主动撞击面设有被动撞击面，在装配状态下，转动手动调节圈，带动深度调节中套相对于外壳在采血笔轴向移动，从而改变采血端面与被动撞击面之间在采血笔轴向的距离，以此调节针尖穿刺深度。
由于上述方案的运用，本发明与现有技术相比具有以下优点和效果：
1.本发明在功能方面能够有效的将穿刺深度调节机构从采血笔头部分离出来，并转移到采血笔的中后部，彻底解决了安装采血针干扰穿刺深度的问题。
2.本发明在保留采血笔原有基本结构和设计布局的前提下，通过深度调节外套和深度调节中套这样的两套筒结构合理和有效的解决穿刺深度调节机构后置的难题。
3.本发明将穿刺深度调节机构中必要的旋转机构、移动机构以及旋转定位机构合理的安置在两套筒结构中，其设计合理，构思巧妙，具有突出的实质性特点和显著的进步。
4.本发明适应性强，不仅可以适用于笔帽与帽座通过插接端口形成插拔连接的结构形式，也适用于笔帽与帽座通过螺纹端口形成螺纹连接的结构形式以及笔帽与帽座先通过插接配合，接着再通过旋转锁扣形成连接的结构形式。
5.本发明具有较好的工艺制造性，而且工作可靠，使用方便，进一步提升了采血笔使用性能，对采血笔的改进和发展起到了积极作用。
附图说明
附图1为本发明采血笔实施例立体图；
附图2为本发明采血笔实施例立体分解图；
附图3为本发明采血笔实施例帽座立体图；
附图4为本发明采血笔实施例卸针杆立体图；
附图5为本发明采血笔实施例外壳立体图；
附图6为本发明采血笔实施例深度调节中套立体图；
附图7为本发明采血笔实施例弹性桥结构剖面图；
附图8为本发明采血笔实施例另一种弹性桥结构剖面图；
附图9为本发明采血笔实施例射杆立体图；
附图10为本发明采血笔实施例射杆、采血针及射杆锁定栓装配状态立体图；
附图11为本发明采血笔实施例射杆、采血针、射杆锁定栓及按钮装配状态立体图；
附图12为本发明采血笔实施例卸针杆及尾拉手装配状态立体图；
附图13为本发明采血笔实施例深度调节外套立体图；
附图14为本发明采血笔实施例初始装配状态图；
附图15为本发明采血笔实施例卸除笔帽状态图；
附图16为本发明采血笔实施例装入采血针状态图；
附图17为本发明采血笔实施例装入采血针后直接按压采血针上膛状态图；
附图18为本发明采血笔实施例装入采血针利用尾拉手上膛状态图；
附图19为本发明采血笔实施例尾拉手在射杆复位弹簧作用下回缩状态图；
附图20为本发明采血笔实施例转动手动调节圈到合适档位后按下按钮状态图；
附图21为本发明采血笔实施例射杆在发射弹簧推动下发射状态图；
附图22为图20的A处放大图；
附图23为图21的B处放大图；
附图24为本发明采血笔实施例射杆复位状态图；
附图25为本发明采血笔实施例卸除笔帽，推尾拉手卸除采血针状态图；
附图26为本发明采血笔实施例恢复初始状态图。
以上附图中：1.笔帽；2.帽座；3.采血端面；4.连接端口；5.采血针；6.射杆；7.主动撞击面；8.深度调节外套；9.深度调节中套；10.手动调节圈；11.旋转定位槽；12.旋转定位块；13.被动撞击面；14.螺旋槽；15.驱动块；16.内凸块；17.外壳；18.限位槽；19.分割槽； 20.弹性桥；21.外凸块；22.尾拉手；23.按钮；24.安全栓；25.笔夹；26.射杆锁定栓；27.卸针杆；28.射杆复位弹簧；29.尾拉卸针复位弹簧；30.发射弹簧；31.针座。
具体实施方式
下面结合附图及实施例对本发明作进一步描述：
实施例：一种穿刺深度后置调节的采血笔
如图1～图13所示，该采血笔由笔帽1、帽座2、射杆6、安全栓24、外壳17、射杆锁定栓26、按钮23、笔夹25、射杆复位弹簧28、尾拉卸针复位弹簧29、发射弹簧30、卸针杆27、深度调节中套9、深度调节外套8和尾拉手22组成(见图2)。
所述笔帽1为采血笔头部的套筒式盖帽，笔帽1前端设有用来接触人体采血部位的采血端面3。所述帽座2为采血笔前部用来与笔帽1连接配合的座体，笔帽1与帽座2通过连接端口4配合连接。在本实施例中，连接端口4为插接端口(见图3)，所述笔帽1与帽座2通过该插接端口形成插拔连接。所述射杆6为一个能够安装采血针5的发射部件，射杆6上设有主动撞击面7。在本实施例中，射杆6的头部设有针座31，用于安装采血针5，主动撞击面7布置在射杆6的尾部侧面(见图9)。射杆锁定栓26装配在射杆6上(见图10)。装配好射杆锁定栓26的射杆6用来与按钮23配合，从而构成射杆6的锁定和解锁结构(见图11)。在本实施例中，射杆6与射杆锁定栓26为分体结构，但本发明不局限于此，也可以将两者设计成一体结构(未给出图示)。所述外壳17为采血笔的壳体(见图5)，外壳17与帽座2为固定连接，但也可以将外壳17与帽座2设计为一体成型结构。安全栓24装配在帽座2上的一个滑槽中，在使用中用来防止误操作卸针。由于该结构与本发明穿刺深度后置调节无关，在此不再详细描述。所述尾拉手22在安装采血针5后用来上膛，在使用后用来卸针。尾拉手22与卸针杆27固定连接(见图12)。
本发明的创新在于针对采血笔设计一种双套筒式穿刺深度后置调节结构。具体内容如下：
在采血笔上设置一个深度调节外套8(见图13)和一个深度调节中套9(见图6)，深度调节外套8和深度调节中套9的主体均为套筒结构，射杆6位于深度调节中套9内，深度调节外套8套装于深度调节中套9外。
所述深度调节外套8相对于外壳17在采血笔的周向上为转动连接，同时在采血笔的轴向上为定位连接。在本实施例中，具体是：在深度调节外套8的外缘上设置环形凹槽(见图13)，而在外壳17的内缘上设置凸筋，凸筋与环形凹槽配合。也可以将两者进行交换，即在深度调节外套8的外缘上设置凸筋，而在外壳17的内缘上设置环形凹槽。深度调节外套8上设有手动调节圈10，手动调节圈10为深度调节外套8中后部的一段套筒(见图13)，在装配状态下手动调节圈10外露在采血笔的中部外侧或后部外侧，以便使用者手动旋转调 节。深度调节外套8上设有旋转定位槽11(见图13)，而帽座2上设有旋转定位块12(见图3)，旋转定位槽11为间隔分布在采血笔周向上的若干个槽体，旋转定位块12为对应旋转定位槽11配置的块状体，旋转定位槽11与旋转定位块12配合构成深度调节外套8相对于外壳17在采血笔的周向上的旋转定位机构。也可以将旋转定位槽11和旋转定位块12两者的设置位置进行交换，即在深度调节外套8上设置旋转定位块12，而帽座2上设置旋转定位槽11。由于帽座2与外壳17在装配状态下为固定连接关系，因此旋转定位槽11或旋转定位块12也可以由设在帽座2上，改为设在外壳17上(只要结构允许即可)。
所述深度调节中套9相对于外壳17在采血笔的周向上为定位连接，同时在采血笔的轴向上为滑动连接。在本实施例中，具体是：在深度调节中套9上设置限位槽18(见图6)，而在帽座2上设置限位块，限位槽18沿采血笔的轴向布置，限位槽18与限位块配合。也可以将限位槽18和限位块两者的设置位置进行交换，即在深度调节中套9上设置限位块，而帽座2上设置限位槽18。由于帽座2与外壳17在装配状态下为固定连接关系，因此限位槽18或限位块也可以由设在帽座2上，改为设在外壳17上。深度调节中套9上对应所述主动撞击面7设有被动撞击面13(见图7)。深度调节中套9上设有螺旋槽14(见图6)，而深度调节外套8上设有驱动块15(见图13)，驱动块15为对应螺旋槽14配置的块状体，螺旋槽14与驱动块15配合构成深度调节中套9相对于外壳17在采血笔的轴向上的移动机构。也可以将螺旋槽14和驱动块15两者的设置位置进行交换，即在深度调节中套9上设置驱动块15，而在深度调节外套8上设置螺旋槽14。
所述深度调节中套9为一管形构件，该管形构件的主体结构为圆管(见图6)。在该管形构件的外缘上沿管体横向开设有至少两对分割槽19(见图6)，每对分割槽19由两个槽体在管体轴向相隔布置而成，所有对分割槽19沿深度调节中套9外缘周向相隔布置，所述槽体在深度调节中套9外缘周向的开口小于180度，而且槽体在管体径向贯穿深度调节中套9的管壁，每对分割槽19将位于中间部分的管壁隔离成弹性桥20，弹性桥20的两端与深度调节中套9连成一体，弹性桥20的桥拱相对深度调节中套9独立，所述被动撞击面13设在桥拱或者桥拱延伸体上，而且是桥拱或者桥拱延伸体靠主动撞击面7一侧的侧面，以此构成弹性桥缓冲结构。在本实施例中，所述桥拱延伸体为桥拱内侧向内延伸的内凸块16(见图7)，所述被动撞击面13为内凸块16靠主动撞击面7一侧的侧面，所述主动撞击面7在深度调节中套9内侧与被动撞击面13碰撞配合。
为了更好地了解本发明中各零部件之间的相对位置和关系，下面结合使用状态对本发明采血笔进行描述：
1.初始装配状态
附图14表示本发明采血笔实施例初始装配状态图。在初始装配状态下各零部件之间的相对 位置和关系可以从图14中看出。
2.卸除笔帽状态
附图15表示本发明采血笔实施例卸除笔帽状态图。在卸除笔帽状态下，笔帽1被卸除，其他各零部件之间的相对位置和关系与图14相同。
3.装入采血针状态
附图16表示本发明采血笔实施例装入采血针状态图。在装入采血针状态下，采血针5插装在射杆6的针座31。
4.1利用采血针上膛状态
附图17表示本发明采血笔实施例装入采血针后直接按压采血针上膛状态图。在此状态下，只要按照图17箭头所指方向直接按压采血针5，射杆6在压缩发射弹簧30同时，射杆6通过射杆锁定栓26被锁定在按钮23上，最后盖上笔帽1。
4.2利用尾拉手上膛状态
附图18表示本发明采血笔实施例装入采血针利用尾拉手上膛状态图。在此状态下，如果不采用直接按压采血针5上膛的方式，也可以先盖上笔帽1后利用向后拉动尾拉手22，射杆6在压缩发射弹簧30同时，射杆6通过射杆锁定栓26被锁定在按钮23上。
附图19表示本发明采血笔实施例尾拉手在射杆复位弹簧28作用下回缩状态图。至此，尾拉手上膛完成。
5.调节穿刺深度状态
穿刺深度调节可以在此状态进行，也可以事先调节好，总之应在正式采血之前调节好。穿刺深度调节的方式是：转动深度调节外套8上的手动调节圈10，深度调节外套8通过驱动块15与螺旋槽14的配合带动深度调节中套9相对于外壳17在采血笔轴向移动，从而改变采血端面3与被动撞击面13之间在采血笔轴向的距离，以此调节针尖穿刺深度。
6.按下按钮状态
附图20表示本发明采血笔实施例转动手动调节圈10到合适档位后按下按钮23状态图。附图22为图20的A处放大图。在此状态下，按钮23迫使射杆6及射杆锁定栓26脱钩。
7.射杆和采血针发射状态
附图21表示本发明采血笔实施例射杆6在发射弹簧30推动下发射状态图。附图23为图21的B处放大图。在此状态下，发射弹簧30推动射杆6及采血针5发射穿刺。
8.射杆复位状态
附图24表示本发明采血笔实施例射杆6复位状态图。在此状态下，在射杆复位弹簧28和发射弹簧30的作用下，射杆6在采血笔轴向上回归到正常位置。
9.卸除采血针状态
附图25表示本发明采血笔实施例卸除笔帽1，推尾拉手22卸除采血针5状态图。在此状态下，先按图中箭头所指方向向前推动尾拉手22迫使采血针5从射杆6的针座31中卸除，同时尾拉卸针复位弹簧29被压缩。
10.恢复初始状态
附图26表示本发明采血笔实施例恢复初始状态图。在此状态下，在尾拉卸针复位弹簧29作用下，尾拉手22复位，然后盖上笔帽1，即恢复初始装配状态。
针对上述实施例，本发明可能产生的变化描述如下：
1.以上实施例中，被动撞击面13设在深度调节中套9的弹性桥20桥拱内侧向内延伸的内凸块16(见图7)上。本发明不局限于此，也可以将被动撞击面13设在弹性桥20桥拱外侧向外延伸的外凸块22(见图8)，所述被动撞击面13为外凸块22靠主动撞击面7一侧的侧面，所述主动撞击面7在深度调节中套9外侧与被动撞击面13碰撞配合。
2.以上实施例中，被动撞击面13设在深度调节中套9的弹性桥20上，以此构成弹性桥缓冲结构。本发明不局限于此，可以不采用弹性桥缓冲结构，即在深度调节中套9的内壁上设有内凸块16，被动撞击面13为内凸块16靠主动撞击面7一侧的端面。所述主动撞击面7设在射杆6或采血针5侧部对应被动撞击面13的运动路径上。
3.以上实施例中，主动撞击面7设在射杆6尾部侧面上。本发明不局限于此，可以将主动撞击面7设计在采血针5上。
4.以上实施例中，深度调节中套9为一管形构件，该管形构件的主体结构为圆管(见图6)。本发明不局限于此，除了圆管而外，深度调节中套9截面形状还可以是矩形、三角形、多边形以及异形等等，比如可以方管、矩形管、三角形管以及多边形管。
5.以上实施例中，连接端口4为插接端口(见图3)。本发明不局限于此，所述连接端口4可以为螺纹端口，所述笔帽1与帽座2通过该螺纹端口形成螺纹连接。连接端口4还可以为插接转扣端口，所述笔帽1与帽座2通过该插接转扣端口形成插接转扣连接。
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。

Claims (10)

  1. 一种穿刺深度后置调节的采血笔，包括笔帽(1)、帽座(2)、射杆(6)以及外壳(17)，其中：
    所述笔帽(1)为采血笔头部的套筒式盖帽，笔帽(1)前端设有用来接触人体采血部位的采血端面(3)；
    所述帽座(2)为采血笔前部用来与笔帽(1)连接配合的座体，笔帽(1)与帽座(2)通过连接端口(4)配合连接；
    所述射杆(6)为一个能够安装采血针(5)的发射部件，射杆(6)或采血针(5)上设有主动撞击面(7)；
    所述外壳(17)为采血笔的壳体，外壳(17)与帽座(2)为固定连接，或者外壳(17)与帽座(2)为一体成型结构；
    其特征在于：所述采血笔上设有一个深度调节外套(8)和一个深度调节中套(9)，深度调节外套(8)和深度调节中套(9)的主体均为套筒结构，射杆(6)位于深度调节中套(9)内，深度调节外套(8)套装于深度调节中套(9)外；
    所述深度调节外套(8)相对于外壳(17)在采血笔的周向上为转动连接，同时在采血笔的轴向上为定位连接；深度调节外套(8)上设有手动调节圈(10)，手动调节圈(10)为深度调节外套(8)中后部的一段套筒，在装配状态下手动调节圈(10)外露在采血笔的中部外侧或后部外侧，以便使用者手动旋转调节；深度调节外套(8)与帽座(2)或外壳(17)两者中，一者上设有旋转定位槽(11)，另一者上设有旋转定位块(12)，旋转定位槽(11)为间隔分布在采血笔周向上的若干个槽体，旋转定位块(12)为对应旋转定位槽(11)配置的块状体，旋转定位槽(11)与旋转定位块(12)配合构成深度调节外套(8)相对于外壳(17)在采血笔的周向上的旋转定位机构；
    所述深度调节中套(9)相对于外壳(17)在采血笔的周向上为定位连接，同时在采血笔的轴向上为滑动连接；深度调节中套(9)上对应所述主动撞击面(7)设有被动撞击面(13)；深度调节中套(9)与深度调节外套(8)两者中，一者上设有螺旋槽(14)，另一者上设有驱动块(15)，驱动块(15)为对应螺旋槽(14)配置的块状体，螺旋槽(14)与驱动块(15)配合构成深度调节中套(9)相对于外壳(17)在采血笔的轴向上的移动机构；在装配状态下，转动深度调节外套(8)上的手动调节圈(10)，带动深度调节中套(9)相对于外壳(17)在采血笔轴向移动，从而改变采血端面(3)与被动撞击面(13)之间在采血笔轴向的距离，以此调节针尖穿刺深度。
  2. 根据权利要求1所述的采血笔，其特征在于：所述深度调节中套(9)的内壁上设有内 凸块(16)，被动撞击面(13)为内凸块(16)靠主动撞击面(7)一侧的端面；所述主动撞击面(7)设在射杆(6)或采血针(5)侧部对应被动撞击面(13)的运动路径上。
  3. 根据权利要求1所述的采血笔，其特征在于：所述深度调节中套(9)为一管形构件，在该管形构件的外缘上沿管体横向开设有至少两对分割槽(19)，每对分割槽(19)由两个槽体在管体轴向相隔布置而成，所有对分割槽(19)沿深度调节中套(9)外缘周向相隔布置，所述槽体在深度调节中套(9)外缘周向的开口小于180度，而且槽体在管体径向贯穿深度调节中套(9)的管壁，每对分割槽(19)将位于中间部分的管壁隔离成弹性桥(20)，弹性桥(20)的两端与深度调节中套(9)连成一体，弹性桥(20)的桥拱相对深度调节中套(9)独立，所述被动撞击面(13)设在桥拱或者桥拱延伸体上，而且是桥拱或者桥拱延伸体靠主动撞击面(7)一侧的侧面，以此构成弹性桥缓冲结构。
  4. 根据权利要求3所述的采血装置，其特征在于：所述桥拱延伸体为桥拱内侧向内延伸的内凸块(16)，所述被动撞击面(13)为内凸块(16)靠主动撞击面(7)一侧的侧面，所述主动撞击面(7)在深度调节中套(9)内侧与被动撞击面(13)碰撞配合。
  5. 根据权利要求3所述的采血装置，其特征在于：所述桥拱延伸体为桥拱外侧向外延伸的外凸块(22)，所述被动撞击面(13)为外凸块(22)靠主动撞击面(7)一侧的侧面，所述主动撞击面(7)在深度调节中套(9)外侧与被动撞击面(13)碰撞配合。
  6. 根据权利要求1所述的采血笔，其特征在于：所述深度调节外套(8)相对于外壳(17)在采血笔的周向上为转动连接，同时在采血笔的轴向上为定位连接，具体结构是：在深度调节外套(8)的外缘与外壳(17)的内缘之间，一者上设置环形凹槽，另一者上设置凸筋，凸筋与环形凹槽配合。
  7. 根据权利要求1所述的采血笔，其特征在于：所述深度调节中套(9)相对于外壳(17)在采血笔的周向上为定位连接，同时在采血笔的轴向上为滑动连接，具体结构是：在深度调节中套(9)与外壳(17)或帽座(2)之间，一者上设置限位槽(18)，另一者上设置限位块，限位槽(18)沿采血笔的轴向布置，限位槽(18)与限位块配合。
  8. 根据权利要求1所述的采血笔，其特征在于：所述连接端口(4)为插接端口，所述笔帽(1)与帽座(2)通过该插接端口形成插拔连接。
  9. 根据权利要求1所述的采血笔，其特征在于：所述连接端口(4)为螺纹端口，所述笔帽(1)与帽座(2)通过该螺纹端口形成螺纹连接。
  10. 根据权利要求1所述的采血笔，其特征在于：所述连接端口(4)为插接转扣端口，所述笔帽(1)与帽座(2)通过该插接转扣端口形成插接转扣连接。
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